this is my current build...
Its a respec build so i wouldnt take these in this order if i was going to start again with this primary/secondary.
if building from scratch i'd bring things like touch of fear right forward as its most useful at the early levels.
bit points of note: it doesnt have tough/weave so you're going to be a bit squishier than other tough'd scrappers
travel powers are superspeed and fly - air superiority is the cornerstone attack in your attack cycle, its the only real defence the build has.
no shadow maul: this was a tough one, i have used shadow maul since day 1 in coh retail and although good i have come to somewhat loath it, the length of animation lock in really does get you killed and you can do more damage using smite, shadow punch and air super as an attack cycle than with shadow maul, without the risk factor. saying that it does have the benefit that your endurance regens while you're stuck in the animation thus you dont burn thru it as fast.
PlayStyle:
I generally take the support protection role, or the minion clearance role, get in the thick of it, ToF the Lts and kill the minions as fast as possible, ignore the bosses, everyone else always concentrate on the bosses so theres no point doing it as well as them. once minions are clear then move up the order.
In this current build its primarily focused around using Energy Torrent, fight one group and switch targets to ET thru as much of all the mobs as possible, then switch back to the previous mob to continue the fight, doing this means you're protecting your team, not just yourself. ET on scrappers is mostly a knock down not a knockback power (unless you're hitting much lower levels), and thus the mobs stay put, they just fall over.
this is a good fun build, you will die a bit but thats part of the fun, i always play my scrapper as close to the edge as possible, and the risk fun factor is huge.
It took me 2 issues to decide on this build (prior to respeccing last week he was still on a S4 I4 build) and this change in spec has reinvigorated the character hes fun to play again and presents new challenges.
Hero Profile
============
Level 1: Smite Dmg(A),Dmg(3),Dmg(11),RechRdx(15),RechRdx(36),Rech Rdx(37)
Level 1: Fast Healing Heal(A),Heal(9),Heal(13)
Level 1: Brawl Empty(A)
Level 1: Sprint Empty(A)
Level 2: Shadow Punch Dmg(A),Dmg(3),Dmg(11),RechRdx(15),RechRdx(36),Rech Rdx(37)
Level 2: Rest Empty(A)
Level 4: Quick Recovery RecInc(A),RecInc(5),RecInc(5)
Level 6: Hasten RechRdx(A),RechRdx(7),RechRdx(7)
Level 8: Air Superiority Dmg(A),Dmg(9),Dmg(13),RechRdx(17),RechRdx(37),Rech Rdx(39)
Level 10: Swift Run(A), Run (40)
Level 12: Dull Pain RechRdx(A),RechRdx(21),RechRdx(34),Heal(36),Heal(4 0),Heal(40)
Level 14: Super Speed Run(A)
Level 16: Integration Heal(A),Heal(17),Heal(19),EndRdx(19)
Level 18: Dark Consumption RechRdx(A),RechRdx(21),RechRdx(27),RecInc(27),RecI nc(46)
Level 20: Hurdle Jump(A)
Level 22: Stamina RecInc(A),RecInc(23),RecInc(23)
Level 24: Resilience ResDam(A),ResDam(25),ResDam(25)
Level 26: Reconstruction Heal(A),Heal(42),Heal(43),RechRdx(43),RechRdx(43), RechRdx(46)
Level 28: Instant Healing RechRdx(A),RechRdx(29),RechRdx(29)
Level 30: Soul Drain RechRdx(A),RechRdx(31),RechRdx(31),ToHit(31)
Level 32: Midnight Grasp Dmg(A),Dmg(33),Dmg(33),RechRdx(33),RechRdx(34),Rec hRdx(34)
Level 35: Fly Flight(A)
Level 38: Moment of Glory RechRdx(A),RechRdx(39),RechRdx(39)
Level 41: Conserve Power RechRdx(A),RechRdx(42),RechRdx(42)
Level 44: Focused Accuracy EndRdx(A),EndRdx(45),ToHit(45),ToHit(45),ToHit(46)
Level 47: Energy Torrent Dmg(A),Dmg(48),Dmg(48),RechRdx(48),RechRdx(50),Rec hRdx(50)
Level 49: Touch of Fear RechRdx(A),Fear(50)
@ExtraGonk
Personally i couldnt do without shadow maul, the animation may be long but it does very good damage.
I wouldnt recomend having all thos recharges in the attacks, the DM set has inherently low accuracy and without accuracy enhancements you will miss a lot with that build ESPECIALLY if you want to PvP. I would go for more something of 2 ACC, 3 Damage and either a recharge or end reduction in the last slot. Although i personally have 2 Acc and 4 damage as i dont need the recharge to keep my attack cycle going and i dont need the saving on endurance with having both QR and stamina 3 slotted. I havent had focused accuracy on mine for a while, but i still think that even with that you would suffer without having 1 Acc at least slotted in powers, but up until you are in the 40's and can get that power i'd advise the 2 Acc. Same applies with soul drain and dark consumption, can be very frustrating to have an end gain power and it not to hit.
Touch of fear i'd avise getting much earlier than 49 and also slotting it a lot more. I currently have 2 Acc, 3 ToHit debuffs and 1 fear dur on mine and it works a treat. Slotted for ToHit debuffs makes this power a very powerful tool.
Instant healing i have slotted 3 recharge and 3 heal.
(just noticed you said its a respec build hence the strange order of power choices 
)
Post deleted by Zephyrus
yep, this is a respec, concerning the ACC, and the actual slotting, this i'd always take under advisement, levelinging up until you hit SO's the ACC is a bane, but once i hit FA and got it 4 slotted with tohits the ACC in the attacks made no difference (I4 build, the I6 current 3tohits isnt as good but certainly not missing much), in fact with them slotted (and using acc insp) it felt like i missed more, thus all ACC was dropped everywhere. with the additional tohit and end mods in soul drain and DC i need less mobs to get that bonus.
the recharges, they are great, everythings always available, and the way i play all my toons is to concentrate on a small number of attacks and get them 6 slotted asap. and as mentioned with QR and stamina 3 slotted you dont worry about endurance even with the hasted recharged up fast attacks that cycle much much faster than when i had the character perma hasted and shadowmaul in the build.
building this again to 24 i'd do this:
shadowmaul and shadow punch could be interchanged, but with shadow punch your free time between hits is more frequent so more chance at running, healing and changing target.
Hero Profile
============
Level 1: Shadow Punch Dmg(A),Dmg(3),Dmg(11),Acc(13)
Level 1: Fast Healing Heal(A),Heal(15),Heal(21)
Level 1: Brawl Empty(A)
Level 1: Sprint Empty(A)
Level 2: Smite Acc(A),Dmg(3),Dmg(11),Dmg(13)
Level 2: Rest Empty(A)
Level 4: Quick Recovery RecInc(A),RecInc(5),RecInc(5)
Level 6: Air Superiority Acc(A),Acc(7),Dmg(7),Dmg(19)
Level 8: Hasten RechRdx(A),RechRdx(9),RechRdx(9)
Level 10: Reconstruction RechRdx(A),RechRdx(15),RechRdx(21)
Level 12: Touch of Fear Acc(A)
Level 14: Super Speed Run(A)
Level 16: Integration EndRdx(A),Heal(17),Heal(17),Heal(19)
Level 18: Swift Run(A)
Level 20: Hurdle Jump(A)
Level 22: Stamina RecInc(A),RecInc(23),RecInc(23)
@ExtraGonk
forums bust again 
@ExtraGonk
Further to the ACC and ShadowMaul, I found when i had ShadowMaul everything else i could cope with missing on, SM had to hit otherwise it was a risk, so that always had 2 ACC in it to try and guarentee a hit, once i dropped SM from the build missing stuff isnt that much of an issue any more as that miss doesnt kill my dps (and me) for more than 1 quick punchs worth.
I used ShadowMaul from level 4 all way to 50 and it was the staple part of my attack: air super, SM, smite and finish with MG. Dropping SM was hard but it has been to my benefit, wont suit all of course but i'd certainly recommend trying playing without and see what you think.
@ExtraGonk
i probably won't take stamina on my dark/regen
I am taking the fighting pool (using boxing instead of shadow punch) and running tough
Quick Recovery should be enough for 2 toggles (esp when i can throw in dark consumption)
Oh. My. God.
My build, do what you want with it.
Exported from version 1.5B of CoH Planner
http://joechott.com/coh
Archetype: Scrapper
Primary Powers - Ranged : Dark Melee
Secondary Powers - Support : Regeneration
01 : Fast Healing hel(01)
01 : Shadow Punch acc(01) acc(3) dam(13) dam(21) dam(34) thtdbf(46)
02 : Shadow Maul acc(02) acc(3) dam(7) dam(19) dam(34) thtdbf(46)
04 : Quick Recovery endrec(04) endrec(5) endrec(5)
06 : Smite acc(06) acc(7) dam(13) dam(19) dam(34) thtdbf(46)
08 : Touch of Fear acc(08) acc(9) ferdur(9) ferdur(43)
10 : Dull Pain recred(10) recred(11) recred(11) hel(25) hel(45) hel(45)
12 : Combat Jumping jmp(12)
14 : Super Jump jmp(14) jmp(15) jmp(15)
16 : Integration hel(16) hel(17) hel(17) endred(25) endred(29) endred(43)
18 : Boxing dam(18)
20 : Resilience damres(20) damres(21)
22 : Tough damres(22) damres(23) damres(23) endred(31) endred(37)
24 : Hurdle jmp(24)
26 : Soul Drain acc(26) acc(27) thtbuf(27)
28 : Grant Invisibility defbuf(28) defbuf(29)
30 : Health hel(30) hel(31) hel(31)
32 : Midnight Grasp acc(32) acc(33) dam(33) dam(33) dam(40) immdur(50)
35 : Instant Healing hel(35) hel(36) hel(36) recred(36) recred(37) recred(37)
38 : Moment of Glory defbuf(38) defbuf(39) defbuf(39) recred(39) recred(40) recred(40)
41 : Focused Accuracy thtbuf(41) thtbuf(42) thtbuf(42) endred(42) endred(43)
44 : Invisibility defbuf(44) defbuf(45)
47 : Laser Beam Eyes acc(47) acc(48) dam(48) dam(48)
49 : Stamina endrec(49) endrec(50) endrec(50)
-------------------------------------------
01 : Brawl enhancement(01)
01 : Sprint enhancement(01)
02 : Rest enhancement(02)
Ignore slotting times, I just clicked what I wanted, not when I wanted.
[ QUOTE ]
Touch of fear i'd avise getting much earlier than 49 and also slotting it a lot more. I currently have 2 Acc, 3 ToHit debuffs and 1 fear dur on mine and it works a treat. Slotted for ToHit debuffs makes this power a very powerful tool.
[/ QUOTE ]
Cheers for this, i changed the Fearsome Stare slotting on my dark defender to slot for tohit debuff and it rocks now 
@ExtraGonk
I'd post mine but its a bit strange, realising I'd never match the damage on my DM/SR (quickness gives me a nicer attack chain) I created a fear based scrapper, have a fair amount from power pools, mostly presence obviously.
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
I specced Stamin out on my last respec, biggest mistake I made, well that and taking weave.... Haven't used it once since taking. Can't post my build because it wasn't planned just made. But I currently run 2x Acc 3x dmg 1x recrdx in all the attacks, mainly as I do a lot of exemping and so lose the benefit of FA. If I can get another free respec I'll probably drop FA all together get the weapons mastery instead (or something).
I have never played a scrapper just a controler and i dont know wich powers to take and where to put slots HELP please.