Here is my build, any sugestions?

Just wondering if there was anything I could do to make it better. I currently have it on one of my toons but its not fully slotted yet. I was also told I should get Tough?

Hero Plan by Mids' Hero Designer 1.91
http://www.cohplanner.com/
Click this DataLink to open the build!
ma regen: Level 50 Magic Scrapper
Primary Power Set: Martial Arts
Secondary Power Set: Regeneration
Power Pool: Speed
Power Pool: Leadership
Power Pool: Leaping
Power Pool: Concealment
Ancillary Pool: Soul Mastery
Hero Profile:
Level 1: Storm Kick -- GS-Acc/Dmg(A), GS-Acc/Dmg/End/Rech(3), GS-Acc/End/Rech(3), GS-%Dam(5), Mako-Dam%(34)
Level 1: Fast Healing -- Numna-Regen/Rcvry+(A), Mrcl-Rcvry+(36)
Level 2: Reconstruction -- Numna-Heal(A), Numna-Heal/EndRdx/Rchg(7), Numna-Heal/Rchg(7)
Level 4: Cobra Strike -- Mako-Dam%(A), Mako-Acc/EndRdx/Rchg(5), Mako-Acc/Dmg(9), Mako-Acc/Dmg/EndRdx/Rchg(9), T'Death-Acc/Dmg/EndRdx(23)
Level 6: Quick Recovery -- P'Shift-End%(A), P'Shift-EndMod(11), P'Shift-EndMod/Rchg(11), P'Shift-EndMod/Acc(17), P'Shift-EndMod/Acc/Rchg(17)
Level 8: Hasten -- RechRdx-I(A), RechRdx-I(13)
Level 10: Focus Chi -- AdjTgt-EndRdx/Rchg(A), AdjTgt-Rchg(13), AdjTgt-ToHit(15), AdjTgt-ToHit/Rchg(15), AdjTgt-ToHit/EndRdx/Rchg(50)
Level 12: Maneuvers -- LkGmblr-Rchg+(A), SW-Def(34), SW-Def/EndRdx(36), SW-Def/EndRdx/Rchg(46)
Level 14: Dull Pain -- Dct'dW-Heal(A), Dct'dW-EndRdx/Rchg(19), Dct'dW-Heal/EndRdx(19), Dct'dW-Heal/Rchg(31), Dct'dW-Heal/EndRdx/Rchg(31)
Level 16: Combat Jumping -- LkGmblr-Rchg+(A)
Level 18: Crane Kick -- GS-Acc/Dmg(A), GS-Acc/Dmg/End/Rech(21), GS-Acc/End/Rech(21), GS-%Dam(23), Mako-Dam%(27), T'Death-Dam%(43)
Level 20: Super Speed -- HO:Micro(A), HO:Micro(34)
Level 22: Super Jump -- HO:Micro(A)
Level 24: Integration -- Mrcl-Heal/Rchg(A), Mrcl-Heal(25), Mrcl-Heal/EndRdx(25)
Level 26: Tactics -- AdjTgt-ToHit(A), AdjTgt-ToHit/EndRdx(27), AdjTgt-ToHit/Rchg(37), AdjTgt-ToHit/EndRdx/Rchg(40), AdjTgt-EndRdx/Rchg(43), Rec'dRet-Pcptn(50)
Level 28: Instant Healing -- Panac-Heal(A), Panac-Heal/EndRedux(29), Panac-EndRdx/Rchg(29), Panac-Heal/Rchg(33), Panac-Heal/+End(45)
Level 30: Stealth -- LkGmblr-Rchg+(A), LkGmblr-Def/EndRdx(31), LkGmblr-Def/EndRdx/Rchg(37), Ksmt-ToHit+(48)
Level 32: Crippling Axe Kick -- GS-%Dam(A), GS-Dam/Rech(33), GS-Dam/End/Rech(33), GS-Acc/Dmg/End/Rech(36), GS-Acc/End/Rech(37)
Level 35: Invisibility -- LkGmblr-Rchg+(A)
Level 38: Eagles Claw -- Hectmb-Acc/Rchg(A), Hectmb-Dmg/Rchg(39), Hectmb-Dmg/EndRdx(39), Hectmb-Dam%(39), Hectmb-Acc/Dmg/Rchg(40), Mako-Acc/Dmg/EndRdx/Rchg(40)
Level 41: Moment of Glory -- SW-Def/EndRdx(A), SW-ResDam/Re TP(42), SW-Def(42), SW-Def/Rchg(42), LkGmblr-Rchg+(43)
Level 44: Dark Blast -- Apoc-Dmg(A), Apoc-Dmg/Rchg(45), Apoc-Acc/Dmg/Rchg(45), Apoc-Dmg/EndRdx(46), Apoc-Dam%(46), GJ-Dam%(50)
Level 47: Shadow Meld -- LkGmblr-EndRdx/Rchg(A), LkGmblr-Def/EndRdx(48), LkGmblr-Def/Rchg(48)
Level 49: Phase Shift -- RechRdx-I(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- ULeap-Stlth(A)
Level 2: Rest -- Empty(A)
Level 1: Critical Hit
Level 4: Ninja Run
Level 2: Swift -- Empty(A)
Level 2: Hurdle -- Empty(A)
Level 2: Health -- Empty(A)
Level 2: Stamina -- Empty(A)

What if I switched Cobra Strike for Resilence?