Looking for tweaks to I19 Katana/Willpower
I think the build is pretty well made overall. It looks like your goal is to soft-cap melee defense, and then e/ne/f/c typed defense. In addition, you are probably pushing the hit point to the cap. If I've to pick something to complain, I think hover can be slotted better, and blaze mastery doesn't really contribute but serves as IO set mule. I modifed your build slightly below. It has slightly higher defense such that they are actually soft-capped, and slightly higher regeneration. Hit points and recharge are slightly lower. It has 4 free slots, which I think can be put to health for example.
Hero Plan by Mids' Hero Designer 1.81
http://www.cohplanner.com/
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Level 50 Magic Scrapper
Primary Power Set: Katana
Secondary Power Set: Willpower
Power Pool: Flight
Power Pool: Leadership
Power Pool: Fighting
Power Pool: Leaping
Ancillary Pool: Blaze Mastery
Hero Profile:
Level 1: Gambler's Cut -- T'Death-Acc/Dmg(A), T'Death-Dmg/EndRdx(3), T'Death-Dmg/Rchg(3), T'Death-Acc/Dmg/EndRdx(5), T'Death-Dmg/EndRdx/Rchg(5), T'Death-Dam%(7)
Level 1: High Pain Tolerance -- S'fstPrt-ResDam/Def+(A), Numna-Heal(27), Numna-Heal/EndRdx(27), Numna-Heal/Rchg(36)
Level 2: Flashing Steel -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Acc/Rchg(7), Erad-Dmg(11), Erad-Acc/Dmg/Rchg(11), M'Strk-Dmg/EndRdx(13)
Level 4: Fast Healing -- Numna-Heal(A), Numna-Heal/EndRdx(36), Numna-Heal/Rchg(36)
Level 6: Build Up -- RechRdx-I(A)
Level 8: Divine Avalanche -- LkGmblr-Rchg+(A), LkGmblr-Def(9), LkGmblr-Def/EndRdx/Rchg(9), Mako-Dmg/EndRdx(37), Mako-Acc/Dmg(37), Mako-Acc/Dmg/EndRdx/Rchg(37)
Level 10: Indomitable Will -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx/Rchg(13), LkGmblr-Def/EndRdx(25)
Level 12: Mind Over Body -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(15), Aegis-ResDam/Rchg(15), Aegis-EndRdx/Rchg(17), Aegis-ResDam/EndRdx/Rchg(17)
Level 14: Calling the Wolf -- Taunt-I(A)
Level 16: Rise to the Challenge -- Numna-Heal(A), Numna-Heal/EndRdx(40), Numna-Heal/EndRdx/Rchg(40)
Level 18: The Lotus Drops -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Dmg(19), Erad-Acc/Rchg(19), Erad-Acc/Dmg/Rchg(23), M'Strk-Dmg/EndRdx(25)
Level 20: Quick Recovery -- P'Shift-End%(A), P'Shift-EndMod/Acc(21), P'Shift-EndMod(21), P'Shift-EndMod/Rchg(23)
Level 22: Hover -- Frbd-EndRdx(A), Frbd-Fly(43), HO:Micro(43), HO:Micro(43)
Level 24: Fly -- Winter-ResSlow(A)
Level 26: Soaring Dragon -- T'Death-Acc/Dmg(A), T'Death-Dmg/EndRdx(45), T'Death-Dmg/Rchg(46), T'Death-Acc/Dmg/EndRdx(46), T'Death-Dmg/EndRdx/Rchg(46), T'Death-Dam%(48)
Level 28: Heightened Senses -- LkGmblr-Rchg+(A), LkGmblr-Def(29), LkGmblr-Def/EndRdx(29), LkGmblr-Def/EndRdx/Rchg(33)
Level 30: Maneuvers -- LkGmblr-Rchg+(A), LkGmblr-Def(31), LkGmblr-Def/EndRdx(31), LkGmblr-Def/EndRdx/Rchg(31)
Level 32: Golden Dragonfly -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Dmg(33), Erad-Acc/Dmg/Rchg(33), C'ngBlow-Acc/Dmg(34), C'ngBlow-Dmg/EndRdx(34), C'ngBlow-Acc/Rchg(34)
Level 35: Boxing -- Empty(A)
Level 38: Tough -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(39), Aegis-ResDam/Rchg(39), Aegis-EndRdx/Rchg(39), Aegis-ResDam/EndRdx/Rchg(40)
Level 41: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def(42), LkGmblr-Def/EndRdx(42), LkGmblr-Def/EndRdx/Rchg(42)
Level 44: Strength of Will -- Aegis-Psi/Status(A), Aegis-ResDam(45), Aegis-ResDam/EndRdx(45)
Level 47: Combat Jumping -- LkGmblr-Def(A)
Level 49: Char -- BasGaze-Acc/Hold(A), BasGaze-Acc/EndRdx/Rchg/Hold(50)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Clrty-Stlth(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
Level 4: Ninja Run
Level 1: Swift -- Flight-I(A)
Level 1: Hurdle -- Jump-I(A)
Thanks!
That does seem like a nice rebuild. You're correct in assuming I was aiming for Soft capped Melee and E/N/F/C, with a ranged smashing hole (seemed the most natural soft caps to aim for considering its Katana/Willpower).
I can imagine modifying the Hover slotting and Golden Dragonfly slightly, adding 2 more Performance Shifters to Stamina, and another 2 Healing IOs to Health to wind up with 1.5% more HP, more Endurance, and another 46% regen.
In any case, it seems to be a better base to work from and I expect I'll have to play with it in Mid's for a bit.
I'm looking for improvements to a Katana/Willpower scrapper build.

The character in question just hit level 32, along with his partner, a level 32 Archery/Mental Manipulation Blaster (who happens to have Maneuvers and Tactics). We've been playing at +0/x6 with mostly just SOs (except for a Karma Knockback and fully IO'd Drain Psyche on the blaster).
I figure at this point I can start trying to grab and slot IOs in the 30-35 range, while also putting out bids for late game IOs (and/or respec some of my other characters and steal some IOs out of them). However, I also I want to keep in mind the upcoming I19 changes as well, so I used the unofficial Mid's patch to produce this plan.
Keeping in mind this Scrapper only gets played in a duo (or larger groups that absorb said duo), and thus benefits from approximately +3.5% extra defense from manuevers, are there any places I can improve this plan? No purples or PVP IOs, since I'm not that rich and already have starving alts.
I'd also like to keep the single target taunt, as I've found it useful for both pulling and grabbing the 1 or 2 stragglers which decide the Blaster is an easier target than the Scrapper who just jumped into the middle. Pulling the entire group over to grab a single enemy's attention can be slightly problematic if there's any major AOEs being thrown around.
Thanks for reading and any suggestions you might have.
Hero Plan by Mids' Hero Designer 1.81
http://www.cohplanner.com/
Click this DataLink to open the build!
Level 50 Natural Scrapper
Primary Power Set: Katana
Secondary Power Set: Willpower
Power Pool: Flight
Power Pool: Leadership
Power Pool: Fighting
Ancillary Pool: Blaze Mastery
Hero Profile:
Level 1: Gambler's Cut -- C'ngImp-Acc/Dmg/EndRdx(A), C'ngImp-Acc/Dmg/Rchg(3), C'ngImp-Dmg/EndRdx/Rchg(3), C'ngImp-Dmg/Rchg(5), C'ngImp-Acc/Dmg(5), Achilles-ResDeb%(7)
Level 1: High Pain Tolerance -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(7), Aegis-ResDam/Rchg(37), Numna-Heal(40), Numna-Heal/EndRdx(40), Numna-Heal/Rchg(40)
Level 2: Flashing Steel -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Acc/Dmg/Rchg(42), Erad-Dmg/Rchg(43), Erad-Acc/Rchg(43), Sciroc-Acc/Dmg/EndRdx(43), M'Strk-Acc/Dmg/EndRdx(45)
Level 4: Fast Healing -- Numna-Regen/Rcvry+(A), Numna-Heal(46), Numna-Heal/EndRdx(46)
Level 6: Build Up -- GSFC-ToHit(A), GSFC-ToHit/Rchg(46), GSFC-ToHit/Rchg/EndRdx(48), GSFC-Rchg/EndRdx(48), GSFC-ToHit/EndRdx(50), GSFC-Build%(50)
Level 8: Divine Avalanche -- DefBuff-I(A), DefBuff-I(9), C'ngImp-Dmg/EndRdx/Rchg(9), C'ngImp-Acc/Dmg/EndRdx(15), C'ngImp-Acc/Dmg/Rchg(15), C'ngImp-Acc/Dmg(37)
Level 10: Indomitable Will -- Ksmt-ToHit+(A), LkGmblr-Rchg+(11), RedFtn-Def/EndRdx(11)
Level 12: Mind Over Body -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(13), Aegis-ResDam/EndRdx/Rchg(13)
Level 14: Calling the Wolf -- Taunt-I(A)
Level 16: Rise to the Challenge -- DarkWD-Slow%(A), Numna-Heal(17), Numna-Heal/EndRdx(17), Numna-Heal/Rchg(37)
Level 18: The Lotus Drops -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Acc/Dmg/Rchg(19), Erad-Dmg/Rchg(19), Erad-Acc/Rchg(25), Sciroc-Acc/Dmg/EndRdx(36), M'Strk-Acc/Dmg/EndRdx(36)
Level 20: Quick Recovery -- P'Shift-End%(A), P'Shift-EndMod(21), P'Shift-EndMod/Rchg(21), P'Shift-EndMod/Acc(25)
Level 22: Hover -- LkGmblr-Rchg+(A), Zephyr-Travel(23), Zephyr-Travel/EndRdx(23)
Level 24: Fly -- Flight-I(A)
Level 26: Soaring Dragon -- T'Death-Acc/Dmg(A), T'Death-Dmg/EndRdx(27), T'Death-Dmg/Rchg(27), T'Death-Acc/Dmg/EndRdx(31), T'Death-Dmg/EndRdx/Rchg(34), T'Death-Dam%(36)
Level 28: Heightened Senses -- LkGmblr-Rchg+(A), LkGmblr-Def(29), LkGmblr-Def/EndRdx(29)
Level 30: Maneuvers -- LkGmblr-Rchg+(A), LkGmblr-Def(31), LkGmblr-Def/EndRdx(31)
Level 32: Golden Dragonfly -- Erad-Acc/Dmg/EndRdx/Rchg(A), Erad-Acc/Dmg/Rchg(33), Erad-Dmg/Rchg(33), Erad-Acc/Rchg(33), Sciroc-Acc/Dmg/EndRdx(34), M'Strk-Acc/Dmg/EndRdx(34)
Level 35: Boxing -- Acc-I(A)
Level 38: Tough -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(39), Aegis-ResDam/EndRdx/Rchg(39), S'fstPrt-ResDam/Def+(39)
Level 41: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def(42), LkGmblr-Def/EndRdx(42)
Level 44: Strength of Will -- Aegis-ResDam(A), Aegis-ResDam/EndRdx(45), Aegis-ResDam/Rchg(45)
Level 47: Char -- BasGaze-Acc/EndRdx/Rchg/Hold(A), BasGaze-Rchg/Hold(48)
Level 49: Melt Armor -- LdyGrey-Rchg/EndRdx(A), LdyGrey-DefDeb/Rchg/EndRdx(50)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
Level 4: Ninja Run
Level 1: Swift -- Flight-I(A)
Level 1: Hurdle -- Jump-I(A)
Level 1: Health -- Mrcl-Rcvry+(A)
Level 1: Stamina -- P'Shift-End%(A)