elec/invul build suggestions?

[Flak]

I stopped playing a little over a year ago.  Not sure what I was planning on doing with this build as I apparently never finished.  Looking for some suggestions open to switching powers and slots:


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

Click this DataLink to open the build!

Level 50 Natural Brute
Primary Power Set: Electrical Melee
Secondary Power Set: Invulnerability
Power Pool: Fitness
Power Pool: Fighting
Power Pool: Speed
Power Pool: Medicine
Ancillary Pool: Soul Mastery

Villain Profile:
Level 1: Havoc Punch -- KntkC'bat-Acc/Dmg(A), KntkC'bat-Dmg/EndRdx(3), KntkC'bat-Dmg/Rchg(5), Empty(7), Empty(7)
Level 1: Resist Physical Damage -- ResDam(A)
Level 2: Jacobs Ladder -- LgcRps-Acc/Rchg(A), LgcRps-Acc/Sleep(3), LgcRps-Acc/EndRdx(5), LgcRps-Sleep/Rng(9), LgcRps-Acc/Sleep/Rchg(9), Empty(11)
Level 4: Temp Invulnerability -- ResDam(A), ResDam(11), EndRdx(13), EndRdx(13)
Level 6: Build Up -- GSFC-ToHit(A), GSFC-ToHit/Rchg(15), GSFC-ToHit/Rchg/EndRdx(15), GSFC-Rchg/EndRdx(17), GSFC-ToHit/EndRdx(17), GSFC-Build%(19)
Level 8: Dull Pain -- Mrcl-EndRdx/Rchg(A), Mrcl-Heal/EndRdx(19), Empty(21), Empty(21), Empty(23), Empty(23)
Level 10: Thunder Strike -- EndRdx(A), EndRdx(25), EndRdx(25), Dmg(27), Dmg(27), RechRdx(29)
Level 12: Swift -- Empty(A)
Level 14: Health -- Empty(A), Empty(45), Empty(46)
Level 16: Unyielding -- ResDam(A), ResDam(29), EndRdx(31), EndRdx(31)
Level 18: Chain Induction -- EndRdx(A), EndRdx(31), EndRdx(33), Dmg(33), Dmg(33), RechRdx(34)
Level 20: Stamina -- Empty(A), Empty(46), Empty(46), Empty(48)
Level 22: Boxing -- Empty(A)
Level 24: Tough -- TtmC'tng-ResDam/EndRdx/Rchg(A), TtmC'tng-ResDam/EndRdx(37), Empty(43)
Level 26: Weave -- RedFtn-Def/Rchg(A), Empty(37), Empty(37)
Level 28: Invincibility -- LkGmblr-Def/EndRdx/Rchg(A), LkGmblr-Def/EndRdx(34), LkGmblr-EndRdx/Rchg(34), Empty(36)
Level 30: Hasten -- RechRdx(A), RechRdx(36), RechRdx(36)
Level 32: Super Speed -- Empty(A)
Level 35: Aid Other -- Empty(A), Empty(40)
Level 38: Lightning Rod -- EndRdx(A), EndRdx(39), EndRdx(39), Dmg(39), Dmg(40), RechRdx(40)
Level 41: Tough Hide -- RedFtn-Def/EndRdx(A), RedFtn-EndRdx(42), RedFtn-Def(42), RedFtn-Def/EndRdx/Rchg(42), Empty(43), Empty(43)
Level 44: Aid Self -- Empty(A), Empty(45), Empty(45)
Level 47: Gloom -- SipInsght-Acc/Rchg(A), SipInsght-ToHitDeb/EndRdx/Rchg(48), SipInsght-%ToHit(48), Empty(50)
Level 49: Soul Tentacles -- Empty(A), Empty(50), Empty(50)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Fury
Level 6: Ninja Run