Build looks fine IMO - in fact I might draw upon for my respec at 50, one or two pointers though.
I'd consider dropping Thunder Kick, after I6 it's not longer the bread and butter attack it once was - it just doesn't have the damage to finish off that minion who's just below half heath anymore. With the amount off attacks you have, and each having 2 Rech Reds. your gonna have lots off attacks that are up and not getting used.
If you really want another attack maybe put in Crippling Axe Kick - it got a pretty hefty buff in I6, and although the animation time is still pretty long, it's a decent attack now.
Focus Accuracy needs a few End Reds. I have 3 in mine, and do fine, I also put an end red in Integration, though I don't think that was entirely necessary.
Some of your attacks, Dragons Tail in particular could do with swapping out a Recharge Red. and puttin in an End Red. Most of my attacks have 1 Recharge and 1 End Red - I guess it's just me but I like to always have enough end 
Though I did do my respec in the middle of a carnies arc, so that might have had something to do with my need for end :P
I'm not so sure about MoG - I'm still deciding whether or not I really want to take it, I think I will, as I had dropped it before 'cause it always left me dead after it expired mid battle, now that debt isn't a problem (at 50) I think hitting MoG when a battle goes sour and ripping everything to shreds will be fun to pull off every now and then... though dying 3 minutes later when some minion sneezes on me will be quite embarrassing
With the option to move characters from the US to Euro servers, I've transferred my old MA/Regen scrapper Hadiya across. Obviously, I haven't played this lad since the Euro version of CoH came out, and with 6 slots in such powers as Hasten and Quick Recovery, and with Stealth originally taken for the now non-existent def bonus, he's in dire need of some respec attention (which also loses his Prestige Power: Surge, something that annoys me no end
)
I just like it as a travel power, and Air Superiority is an amazing single-target control power. Originally I went with perma-hasten and SS, but hasten's utility went down somewhat and with spare slots on the attacks from un-needed damage I can add recreds to those instead.
Hadiya is currently level 28, and the respec I have planned out for him runs something like this:
Exported from version 1.5B of CoH Planner
http://joechott.com/coh
Archetype: Scrapper
Primary Powers - Ranged : Martial Arts
Secondary Powers - Support : Regeneration
01 : Fast Healing hel(01) hel(46) hel(50)
01 : Thunder Kick acc(01) dam(3) dam(5) dam(11) recred(40) recred(46)
02 : Storm Kick acc(02) dam(3) dam(5) dam(11) recred(40) recred(43)
04 : Reconstruction recred(04) recred(19) recred(21) hel(36) hel(36) hel(37)
06 : Quick Recovery endrec(06) endrec(7) endrec(7)
08 : Air Superiority acc(08) dam(9) dam(9) dam(15)
10 : Dull Pain recred(10) recred(19) recred(21) hel(36) hel(37) hel(37)
12 : Crane Kick acc(12) dam(13) dam(13) dam(15) recred(39) recred(43)
14 : Fly fltspd(14)
16 : Integration hel(16) hel(17) hel(17)
18 : Swift runspd(18)
20 : Health hel(20) hel(50) hel(50)
22 : Stamina endrec(22) endrec(23) endrec(23)
24 : Focus Chi recred(24) recred(25) recred(25)
26 : Resilience damres(26) damres(27) damres(27)
28 : Instant Healing recred(28) recred(29) recred(29) hel(34) hel(34) hel(34)
30 : Dragons Tail acc(30) dam(31) dam(31) dam(31) recred(42) recred(46)
32 : Eagles Claw acc(32) dam(33) dam(33) dam(33) recred(40) recred(43)
35 : Revive recred(35)
38 : Moment of Glory recred(38) recred(39) recred(39)
41 : Focused Accuracy thtbuf(41) thtbuf(42) thtbuf(42)
44 : Laser Beam Eyes acc(44) dam(45) dam(45) dam(45)
47 : Energy Torrent acc(47) dam(48) dam(48) dam(48)
49 : Group Fly fltspd(49)
-------------------------------------------
01 : Brawl Empty(01)
01 : Sprint Empty(01)
02 : Rest Empty(02)
Now, I missed most of the ED fuss and palaver (I was away for about a month at the time), so I'm not 100% sure I fully understand the new slotting guidelines. Any advice, comments or critiques would be welcome.
A couple of rambling points:
Yeah, yeah, Fly, I know
Originally I had Resilience and Dragon's Tail swapped around in the order they show in, but post-ED I figured I'd want the defence early.
Should I cannibalize some slots to add DefBuff to MoG? I honestly can't remember where it hits its caps, not having had the opportunity to actually test it.