Well it would be nice to slot your first attacks with accuracy and damage. Since I know nothing about regen except that you'd better go for 25%+ positional defenses and 50%+ global recharge, I won't try to build something, but you have wonky slotting all over the build.
Oh and don't skip Moment of Glory, put 3 recharges in it, maybe a LotG unique too. That's all I know about regen.
Fixt*
You're primary goal in slotting is to get enough recharge bonuses to be able to achieve Perma-Dull Pain. As you aren't listing your global recharge, I can't tell by the slotting if you have hit the requirements or not.
Regen really depends on excellent global recharge. DP absolutely needs to be made perma and it will bring up Reconstruction and Moment of Glory faster also.
Divine Avalanche needs to be slotted like an attack with just enough defense to give you the complete defense bonus.
Moment of Glory needs 3 recharges.
Once you get enough global recharge, concentrate on any extra defense bonuses you can as that allows you time to recharge damage when the enemy misses.
as my build is
Regen: 118%
Health: 22.93%
Healing: 29%
Rech: 55%
Melee Def: 17.39%
Recov: 27%
Dmg: 19.5%
Acc: 24%
and some other random lil set bonuses
Where Kat/Regen is concerned, you haven't really gotten everything down pat.
Just going down the list...
Numina's 3 and 4 piece set bonuses are largely useless for a */Regen. +Hp means nothing when perma-DP combined with the passive accolades puts you within a single set bonus of the Scrapper hp cap. You'll get all of the remaining +hp that you need from tangential bonuses, like the 3 piece set bonus from Touch of Death or Mako's Bite, while you're on your way to the 6 piece set bonus for those sets. +Heal is useless because the only power you've got that benefits from it is Dull Pain. Reconstruction doesn't benefit from it because Reconstruction is flagged to ignore buffs and debuffs. All of your regeneration powers don't benefit from it because it's a global enhancement to healing, specifically, which doesn't include regeneration. Even Dull Pain only benefits partially because that +heal only affects the heal portion of the power, not the +hp portion. Fast Healing is pretty much a dump for the heal set procs and a single Heal IO to give you a 2 piece set bonus and some extra regen. It's not one of your fundamental powers that needs a crapload of slotting.
You don't need to take both Gambler's Cut and Sting of the Wasp in an IO build, or, as I should say, you don't need Sting of the Wasp because Gambler's Cut is simply better and you don't need both of them. Also, the slotting you've chosen is less than optimal because you're going to want to get an AH proc into Gambler's Cut. If you're going with purples, since you're using Gambler's Cut so often, I would recommend giving it 5 piece Hecatomb (all but Dam/Rech) and the AH proc.
You're overslotting Quick Recovery and Stamina (and taking Stamina way too early; you're not burning up that much endurance to need it at level 20; you've already got Quick Recovery doing more for you than Stamina does). What you're getting out of that 6 piece set doesn't make up for the fact that you're wasting so much enhancement. The standard slotting I use for Quick Recovery and Stamina is pretty simple: Perf Shifter proc (because it's friggin' powerful), Perf Shifter End Mod, and a common End Mod. It's the best bang for your slot buck that you can manage.
If you take nothing else away from this post, learn this: Divine Avalanche is an attack, and it should be slotted as such. Using Divine Avalanche kills your DPS. If you don't slot it as an attack, it's going to hurt your DPS even more. Best slotting, imo, is 5 piece Crushing Impact (for the +rech set bonus) and an LotG +rech (because you want as many of these as you can stuff into your build; they're awesome).
On the same note as what you did to Divine Avalanche, Reconstruction is a heal, not a resistance power. The only resistance you're enhancing with that set up is your toxic resistance, and I really doubt you're facing that much toxic damage that you need to enhance the crap out of Recon. 5 piece Doctored Wounds (all but End/Rech) or 5 piece Panacea (all but proc) is what Recon both needs and wants.
Health is a largely useless power to a */Regen. */Regen already packs enough damage recovery that anything that Health provides is eaten up into nothing. Slotting it up is drawing slots that could be used in substantially more efficient ways, like providing more recharge or defense. I'd give it a common heal IO or maybe a heal unique if I were feeling generous.
Dull Pain needs and wants to be treated the same as Reconstruction. Like I've said before, Numina's Convalescence isn't all that great and 5 piece Doctored Wounds is awesome. 5 piece Panacea is decent enough, but recharge matters with a power like DP, so you might not want to use that set (Panacea 5 piece is ~15% +rech lower than Doctored Wounds 5 piece low recharge set up, it's about 23.5% lower than the high recharge set up and only provides 2.5% more +rech than the Doc Wounds 5 piece).
Build Up doesn't have all that many important things to enhance. The endurance cost is negligible, and the tohit buff is large enough that it's redundant to make it bigger. The only thing that matters is recharge. If you want to make out with a bit more interesting slotting, give it an Adjusted Targeting Recharge, Adjusted Targeting Tohit/Rech, and a common Recharge IO. You'll get like 2% less +rech (whoop de do...) but get a decent little 2% +dam buff.
For Golden Dragonfly, that's decent enough slotting, but, if you really want to push the envelope, put in the Fury of the Gladiator proc into there (like you put the AH proc into Gambler's Cut). The two -res procs stack and will allow you to generate substantially more DPS than you would be otherwise (combining the two, with a decent attack string, you'll generate 12-16% -res on average).
If you're going to take FA, it's going to need/want more love than that. It benefits from both endurance and tohit buff slotting, so you can afford to dump a few more slots into it. Best idea, in my opinion, is to do a 6 piece Gaussian's: you get good end redux, good +tohit, a nice little proc that provides some nice +dam over time, and a very nice set bonus (2.5% +def to all 3 positions).
Physical Perfection is virtually pointless to slot. The base values are so low that you get almost nothing out of it. Of course, if you're getting Quick Recovery, Stamina, and Physical Perfection all in the same build, you probably don't need at least one of them. Honestly, I'd do away with Stamina because having to take 2 other power from Fitness is annoying, and you don't need the massive increase to recovery until you get a massive end drain like FA (which is right when PP comes along). Honestly, if you did that, you'd get 3 more power picks and a new power pool that you could use to pick up Leadership (for Maneuvers and Tactics), with a spare pick for Resilience (great spot to shove the Steadfast and Gladiator's 3% +def IOs).
MoG should most definitely be taken at level 38. Get MoG, slot MoG, learn to love MoG. It's, honestly, my favorite power in the entire set. Giving it just a single slot is an insult the the awesomeness of the power. MoG loves recharge. Feed the MoG recharge and it will make you happy. Slotting it for resistance or defense is kinda pointless because it'll already be pretty much capping you on both values. My preference for slotting is an LotG +rech (weren't expecting that, huh?), an LotG def/rech, and 2 common rech IOs. You'll get redzone recharge enhancement, a nice little +regen set bonus, and 7.5% +rech global. Complete awesomeness.
Something else you may want to consider is getting some AoEs. Not only will it make you much more effective on teams, where AoE damage means a helluva lot more than ST damage, but the PbAoE damage sets have quite possible the best IO set in the game: Obliteration. It's got awesome enhancement values and even better set bonuses. It's a definite want set. I'd definitely make room for The Lotus Drops with 6 piece Obliteration, at the very least (most likely by dropping Sting of the Wasp, useless thing that it is).
Here's a crazy tweaked out Kat/Regen build I've got on my hard drive that you may want to check out. It's softcapped to melee with but a single application of DA and filled will all kinds of other goodies. It's the updated version of the build I made that ValBlademaster used to solo 4 dev AVs at once.
Hero Plan by Mids' Hero Designer 1.621
http://www.cohplanner.com/
Click this DataLink to open the build!
Level 50 Magic Scrapper
Primary Power Set: Katana
Secondary Power Set: Regeneration
Power Pool: Leaping
Power Pool: Speed
Power Pool: Fighting
Power Pool: Leadership
Ancillary Pool: Body Mastery
Hero Profile:
Level 1: Gambler's Cut -- Hectmb-Dmg(A), Hectmb-Acc/Dmg/Rchg(3), Hectmb-Acc/Rchg(3), Hectmb-Dmg/EndRdx(5), Hectmb-Dam%(5), Achilles-ResDeb%(7)
Level 1: Fast Healing -- Numna-Heal(A), RgnTis-Regen+(29), Numna-Regen/Rcvry+(46), Mrcl-Rcvry+(46)
Level 2: Reconstruction -- Dct'dW-Heal/EndRdx(A), Dct'dW-Heal/Rchg(7), Dct'dW-Heal/EndRdx/Rchg(9), Dct'dW-Heal(9), Dct'dW-Rchg(11)
Level 4: Quick Recovery -- P'Shift-End%(A), P'Shift-EndMod(11), EndMod-I(13)
Level 6: Combat Jumping -- LkGmblr-Rchg+(A), LkGmblr-Def(13), Winter-ResSlow(27)
Level 8: Divine Avalanche -- C'ngImp-Acc/Dmg(A), C'ngImp-Dmg/EndRdx(15), C'ngImp-Acc/Dmg/Rchg(15), C'ngImp-Acc/Dmg/EndRdx(17), C'ngImp-Dmg/EndRdx/Rchg(17), LkGmblr-Rchg+(19)
Level 10: Dull Pain -- Panac-Heal/EndRedux(A), Panac-EndRdx/Rchg(19), Panac-Heal/Rchg(21), Panac-Heal/EndRedux/Rchg(21), Panac-Heal(23)
Level 12: Build Up -- AdjTgt-Rchg(A), AdjTgt-ToHit/Rchg(23)
Level 14: Super Jump -- Zephyr-Travel(A), Zephyr-Travel/EndRdx(25)
Level 16: Integration -- Numna-Heal(A), Numna-Heal/EndRdx(29), Heal-I(31)
Level 18: The Lotus Drops -- Oblit-Dmg(A), Oblit-Acc/Rchg(31), Oblit-Dmg/Rchg(31), Oblit-Acc/Dmg/Rchg(33), Oblit-Acc/Dmg/EndRdx/Rchg(33), Oblit-%Dam(33)
Level 20: Hasten -- RechRdx-I(A), RechRdx-I(34), RechRdx-I(34)
Level 22: Boxing -- Empty(A)
Level 24: Tough -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(25), Aegis-ResDam/EndRdx/Rchg(27), S'fstPrt-ResDam/Def+(34)
Level 26: Soaring Dragon -- T'Death-Acc/Dmg(A), T'Death-Dmg/EndRdx(36), T'Death-Dmg/Rchg(37), T'Death-Acc/Dmg/EndRdx(37), T'Death-Dmg/EndRdx/Rchg(37), T'Death-Dam%(39)
Level 28: Instant Healing -- Dct'dW-EndRdx/Rchg(A), Dct'dW-Heal/Rchg(36), Dct'dW-Heal/EndRdx/Rchg(36), Dct'dW-Heal(39), Dct'dW-Rchg(39)
Level 30: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx(40), LkGmblr-Def(40)
Level 32: Golden Dragonfly -- Armgdn-Dmg/Rchg(A), Armgdn-Acc/Dmg/Rchg(42), Armgdn-Acc/Rchg(42), Armgdn-Dmg/EndRdx(42), Armgdn-Dam%(43), FotG-ResDeb%(43)
Level 35: Maneuvers -- LkGmblr-Rchg+(A), LkGmblr-Def(43), LkGmblr-Def/EndRdx(45)
Level 38: Moment of Glory -- LkGmblr-Rchg+(A), LkGmblr-Def/Rchg(40), RechRdx-I(46), RechRdx-I(50)
Level 41: Conserve Power -- RechRdx-I(A)
Level 44: Physical Perfection -- P'Shift-End%(A), P'Shift-EndMod(45), Panac-Heal/+End(45)
Level 47: Tactics -- GSFC-ToHit(A), GSFC-ToHit/Rchg(48), GSFC-ToHit/Rchg/EndRdx(48), GSFC-Rchg/EndRdx(48), GSFC-ToHit/EndRdx(50), GSFC-Build%(50)
Level 49: Resilience -- GA-3defTpProc(A)
------------
Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
Level 0: Ninja Run
Awesome response! thanks Um
I wasnt too sure with how +health and heal was going to work for a Regen, was either two ways i just picked the wrong way lol. alot of good information there hell i think your post has made me want to look at my other builds to see if i can push them even farther. but anyway def going to take alot of your advice and see if i can use the build u posted as a template. thanks alot!
So im trying to come up with a build for my Kat/Regen, im not really concerned with cost as i dont wanna just build it and be done. I figured making a build myself and asking for advice on it would be better then just asking for a build from one of you guys. So here is what i came up with, its kind of a mish-mash i was going for as much rec/regen as i could my end goal would be to be able to solo AV's and just be all around powerful (who doesn't want that lol) I also dont know the numbers on this as i built it with the browser mids because im on a Mac.
+----------------------------------------------------------------
+ Built with SuckerPunch's Online Planner v5.0
+ http://planner.cohtitan.com/planner
+----------------------------------------------------------------
Archetype: Scrapper
Primary: Katana
Secondary: Regeneration
+----------------------------------------------------------------
01: Fast Healing => Numinas_Convalesence(1), Numinas_Convalesence(3), Numinas_Convalesence(3), Numinas_Convalesence(5)
01: Sting of the Wasp => Touch_of_Death(1), Touch_of_Death(5), Touch_of_Death(7), Touch_of_Death(7), Touch_of_Death(9), Touch_of_Death(9)
02: Gambler's Cut => Touch_of_Death(2), Touch_of_Death(11), Touch_of_Death(11), Touch_of_Death(13), Touch_of_Death(13), Touch_of_Death(15)
04: Quick Recovery => Efficacy_Adaptor(4), Efficacy_Adaptor(15), Efficacy_Adaptor(17), Efficacy_Adaptor(17), Efficacy_Adaptor(19), Efficacy_Adaptor(19)
06: Hurdle => Jump(6)
08: Divine Avalanche => Luck_of_the_Gambler(8), Luck_of_the_Gambler(25), Luck_of_the_Gambler(31), Luck_of_the_Gambler(31)
10: Hasten => Recharge(10), Recharge(29)
12: Reconstruction => Titanium_Coating(12), Titanium_Coating(33), Titanium_Coating(34), Titanium_Coating(34), Titanium_Coating(34), Titanium_Coating(50)
14: Super Speed => EnduranceDiscount(14)
16: Integration => Numinas_Convalesence(16), Numinas_Convalesence(31), Numinas_Convalesence(33)
18: Health => Miracle(18), Miracle(27), Miracle(27), Miracle(29)
20: Stamina => Efficacy_Adaptor(20), Efficacy_Adaptor(21), Efficacy_Adaptor(21), Efficacy_Adaptor(23), Efficacy_Adaptor(23), Efficacy_Adaptor(25)
22: Dull Pain => Numinas_Convalesence(22), Numinas_Convalesence(43), Numinas_Convalesence(43), Numinas_Convalesence(43)
24: Build Up => Empty(24), Empty(45), Empty(45), Empty(45), Empty(46), Empty(46)
26: Soaring Dragon => Touch_of_Death(26), Touch_of_Death(39), Touch_of_Death(40), Touch_of_Death(40), Touch_of_Death(40), Touch_of_Death(42)
28: Instant Healing => Numinas_Convalesence(28), Numinas_Convalesence(37), Numinas_Convalesence(37), Numinas_Convalesence(39)
30: Combat Jumping => Luck_of_the_Gambler(30)
32: Golden Dragonfly => Armageddon(32), Armageddon(36), Armageddon(36), Armageddon(36), Armageddon(37)
35: Boxing => Damage(35)
38: Tough => Steadfast_Protection(38), Steadfast_Protection(39)
41: Weave => Luck_of_the_Gambler(41), Luck_of_the_Gambler(42), Luck_of_the_Gambler(42)
44: Focused Accuracy => Adjusted_Targeting(44), Adjusted_Targeting(46), Empty(50)
47: Physical Perfection => Efficacy_Adaptor(47), Efficacy_Adaptor(48), Efficacy_Adaptor(48), Efficacy_Adaptor(48), Efficacy_Adaptor(50), Efficacy_Adaptor(50)
49: Moment of Glory => Luck_of_the_Gambler(49)
+----------------------------------------------------------------
+ Inherent Powers
+----------------------------------------------------------------
01: Brawl => Empty(1)
01: Sprint => Empty(1)
02: Rest => Empty(2)