WS Mob Killa? help plz

Hi I've almost completed my journey to 50 on my warshade, and was seeking advice. I'm more fond of juss creating a human warshade in the end, and needed advice on defense and damage. I'd like to solo my own large maps collecting influence and recipes ya kno...Haha. Here is my current build idea if anyone can leave feedback id be awesome Thanks!

Hero Plan by Mids' Hero Designer 1.707
http://www.cohplanner.com/

Click this DataLink to open the build!

Level 50 Science Warshade
Primary Power Set: Umbral Blast
Secondary Power Set: Umbral Aura
Power Pool: Fitness
Power Pool: Leaping
Power Pool: Speed
Power Pool: Fighting

Hero Profile:
Level 1: Shadow Bolt -- ImpSwft-Dam%(A)
Level 1: Absorption -- S'fstPrt-ResDam/Def+(A), S'fstPrt-ResKB(3)
Level 2: Gravimetric Snare -- GravAnch-Immob/Rchg(A), GravAnch-Acc/Immob/Rchg(3), GravAnch-Acc/Rchg(9), GravAnch-Immob/EndRdx(11), GravAnch-Hold%(11)
Level 4: Orbiting Death -- Armgdn-Dam%(A), Armgdn-Dmg/EndRdx(5), Armgdn-Dmg/Rchg(5), Armgdn-Acc/Dmg/Rchg(7), Armgdn-Acc/Rchg(7), Oblit-%Dam(9)
Level 6: Shadow Blast -- Apoc-Dmg/Rchg(A), Apoc-Acc/Dmg/Rchg(39), Apoc-Acc/Rchg(39), Apoc-Dmg/EndRdx(40), Apoc-Dam%(40)
Level 8: Hurdle -- Jump-I(A)
Level 10: Combat Jumping -- LkGmblr-Rchg+(A)
Level 12: Sunless Mire -- Oblit-Acc/Dmg/EndRdx/Rchg(A), Oblit-%Dam(13), Oblit-Acc/Rchg(13), Oblit-Dmg(15), Oblit-Dmg/Rchg(15), Oblit-Acc/Dmg/Rchg(17)
Level 14: Shadow Cloak -- LkGmblr-Rchg+(A), LkGmblr-Def(37)
Level 16: Dark Detonation -- Ragnrk-Dmg(A), Ragnrk-Dmg/Rchg(17), Ragnrk-Acc/Dmg/Rchg(19), Ragnrk-Acc/Rchg(19), Ragnrk-Dmg/EndRdx(21), FrcFbk-Rechg%(21)
Level 18: Gravity Well -- T'Death-Acc/Dmg(A), T'Death-Dmg/EndRdx(40), T'Death-Dmg/Rchg(42), T'Death-Acc/Dmg/EndRdx(42), T'Death-Dmg/EndRdx/Rchg(42), T'Death-Dam%(43)
Level 20: Hasten -- RechRdx-I(A), RechRdx-I(23), RechRdx-I(23)
Level 22: Stygian Circle -- Efficacy-EndMod(A), Efficacy-EndMod/Rchg(25), Efficacy-EndMod/Acc/Rchg(25), Efficacy-Acc/Rchg(27), Efficacy-EndMod/Acc(27), Efficacy-EndMod/EndRdx(45)
Level 24: Health -- Numna-Regen/Rcvry+(A)
Level 26: Unchain Essence -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(46), Posi-Dmg/Rchg(46), Posi-Acc/Dmg/EndRdx(46), Posi-Dam%(50)
Level 28: Inky Aspect -- Amaze-Stun/Rchg(A), Amaze-Acc/Stun/Rchg(29), Amaze-Acc/Rchg(29), Amaze-EndRdx/Stun(31), Amaze-ToHitDeb%(31)
Level 30: Stamina -- P'Shift-End%(A), P'Shift-EndMod(31), EndMod-I(33)
Level 32: Dark Extraction -- SvgnRt-Acc(A), SvgnRt-Acc/Dmg(33), SvgnRt-Acc/EndRdx(33), SvgnRt-Acc/Dmg/EndRdx(34), SvgnRt-Dmg/EndRdx(34), SvgnRt-PetResDam(34)
Level 35: Quasar -- Oblit-Acc/Dmg/EndRdx/Rchg(A), Oblit-%Dam(36), Oblit-Dmg(36), Oblit-Acc/Rchg(36), Oblit-Dmg/Rchg(37), Oblit-Acc/Dmg/Rchg(37)
Level 38: Eclipse -- ImpArm-ResDam/Rchg(A), ImpArm-ResDam/EndRdx/Rchg(39), ImpArm-EndRdx/Rchg(43)
Level 41: Kick -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(43), KntkC'bat-Dmg/Rchg(45), KntkC'bat-Knock%(45)
Level 44: Tough -- EndRdx-I(A)
Level 47: Weave -- LkGmblr-Rchg+(A), LkGmblr-Def(48), LkGmblr-Def/EndRdx(48)
Level 49: Stygian Return -- Heal-I(A)
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Level 1: Brawl -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(48), KntkC'bat-Dmg/Rchg(50), KntkC'bat-Knock%(50)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Dark Sustenance
Level 1: Ninja Run -- Empty(A)
Level 10: Shadow Recall -- Empty(A)
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Make room for Gravimetric Emanation - the aoe stun. It's amazing for mitigation.

Nitpick: It's "Gravitic Emanation" and it's a cone rather than an AOE. It is indeed amazing.

Nitpick: Cones are AoEs, they just aren't spherical. My only beef with Gravitic Emanation is the knockback. The cone itself is easily large enough to get all or most of a group in if aimed you position yourself correctly (easy with Warshades).

Nitpicky nitpick: Since we have three distinct types of AOE powers (PbAOE, targeted AOE or "spherical" if you will, and cone AOE), I find that just saying "AOE" can be misleading. "Spherical" also doesn't work since PbAOE are likewise spherical. Hence I prefer to use the terms "PbAOE", "AOE" and "Cone", though I suppose "targeted AOE" would be more correct. And this is totally a semantic tangent.

Short version: Take Gravitic Emanation!