Couple of quick thoughts as there's really 3 ways to approach it.
1) Maximum recharge build - This focuses on making the opposition fall over as fast as possible. With the Ice secondary that's not a bad way to approach it. Fairly affordable unless you want to Purple out. In that case it's VERY expen$ive.
2) Soft capped defense to Smashing/Lethal - Expensive but well worth it.
3) Soft capped ranged defense (or within a single small purple insp's worth of the soft cap) some AoE defense and hover. This is the cheapest route.
Another thing to note is if the power you are using isn't a travel power and you only have 2 slots in it you might want to re-evaluate that power pick. You are either not getting enough out of it or don't really need it.
-Insanity is doing the same thing over and over again and expecting different results. - Albert Einstein.
-I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. - Galileo Galilei
-When injustice becomes law, resistance becomes duty. - Thomas Jefferson
I've been playing my main (Fire/Ice Blaster) more lately, and decided it's about time for him to respec. I put together the below build hoping to increase survivability while either keeping damage the same or increasing it. The numbers didn't really come out as good as I was hoping, and I was wondering if anyone has some ideas?
Hero Plan by Mids' Hero Designer 1.707
http://www.cohplanner.com/
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Level 50 Natural Blaster
Primary Power Set: Fire Blast
Secondary Power Set: Ice Manipulation
Power Pool: Fitness
Power Pool: Speed
Power Pool: Leaping
Power Pool: Flight
Ancillary Pool: Flame Mastery
Hero Profile:
Level 1: Fire Blast -- Dev'n-Acc/Dmg(A), Dev'n-Dmg/EndRdx(3), Dev'n-Acc/Dmg/EndRdx/Rchg(7), Dev'n-Acc/Dmg/Rchg(34), Thundr-Acc/Dmg(37), Thundr-Acc/Dmg/EndRdx(43)
Level 1: Chilblain -- GravAnch-Immob(A), GravAnch-Immob/EndRdx(27)
Level 2: Fire Ball -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(3), Posi-Dmg/Rchg(7), Posi-Dmg/Rng(40), Posi-Acc/Dmg/EndRdx(40)
Level 4: Flares -- Dev'n-Acc/Dmg(A), Dev'n-Dmg/EndRdx(5), Dev'n-Acc/Dmg/EndRdx/Rchg(5), Dev'n-Acc/Dmg/Rchg(46), Thundr-Acc/Dmg(46), Thundr-Acc/Dmg/EndRdx(46)
Level 6: Hurdle -- Jump-I(A)
Level 8: Fire Breath -- Posi-Acc/Dmg(A), Posi-Dmg/EndRdx(9), Posi-Dmg/Rchg(9), Posi-Dmg/Rng(31), Posi-Acc/Dmg/EndRdx(34)
Level 10: Hasten -- RechRdx-I(A), RechRdx-I(11), RechRdx-I(11)
Level 12: Aim -- AdjTgt-ToHit(A), AdjTgt-ToHit/Rchg(13), AdjTgt-ToHit/EndRdx/Rchg(13), AdjTgt-EndRdx/Rchg(48), AdjTgt-Rchg(50)
Level 14: Super Speed -- Zephyr-Travel(A), Zephyr-Travel/EndRdx(15), Clrty-Stlth(15)
Level 16: Health -- Numna-Regen/Rcvry+(A), Heal-I(17), Heal-I(17)
Level 18: Blaze -- Dev'n-Acc/Dmg(A), Dev'n-Dmg/EndRdx(19), Dev'n-Dmg/Rchg(19), Dev'n-Acc/Dmg/Rchg(23), Dev'n-Acc/Dmg/EndRdx/Rchg(37), Dev'n-Hold%(43)
Level 20: Stamina -- EndMod-I(A), EndMod-I(21), P'Shift-End%(21)
Level 22: Chilling Embrace -- TmpRdns-EndRdx/Rchg/Slow(A), TmpRdns-Acc/Slow(23)
Level 24: Build Up -- GSFC-ToHit(A), GSFC-ToHit/Rchg(25), GSFC-ToHit/Rchg/EndRdx(25), GSFC-Rchg/EndRdx(27), GSFC-ToHit/EndRdx(50), GSFC-Build%(50)
Level 26: Combat Jumping -- Krma-ResKB(A)
Level 28: Shiver -- TmpRdns-Acc/Slow(A), TmpRdns-Acc/EndRdx(29), TmpRdns-Rng/Slow(29), TmpRdns-EndRdx/Rchg/Slow(31), TmpRdns-Acc/Dmg/Slow(31)
Level 30: Hover -- LkGmblr-Rchg+(A)
Level 32: Inferno -- Sciroc-Acc/Dmg(A), Sciroc-Dmg/EndRdx(33), Sciroc-Dmg/Rchg(33), Sciroc-Acc/Rchg(33), Sciroc-Acc/Dmg/EndRdx(34)
Level 35: Freezing Touch -- BasGaze-Acc/Hold(A), BasGaze-Acc/Rchg(36), BasGaze-Rchg/Hold(36), BasGaze-EndRdx/Rchg/Hold(36), BasGaze-Acc/EndRdx/Rchg/Hold(37)
Level 38: Ice Sword -- Mako-Acc/Dmg(A), Mako-Dmg/EndRdx(39), Mako-Dmg/Rchg(39), Mako-Acc/EndRdx/Rchg(39), Mako-Acc/Dmg/EndRdx/Rchg(40)
Level 41: Char -- UbrkCons-Hold(A), UbrkCons-Hold/Rchg(42), UbrkCons-Acc/Hold/Rchg(42), UbrkCons-Acc/Rchg(42), UbrkCons-EndRdx/Hold(43)
Level 44: Fire Shield -- S'fstPrt-ResDam/Def+(A), Aegis-Psi/Status(45), TtmC'tng-ResDam/EndRdx(45), ResDam-I(45)
Level 47: Rise of the Phoenix -- RechRdx-I(A), RechRdx-I(48), RechRdx-I(48)
Level 49: Ice Patch -- EndRdx-I(A)
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Level 1: Brawl -- Empty(A)
Level 1: Sprint -- Empty(A)
Level 2: Rest -- Empty(A)
Level 1: Defiance
Level 6: Ninja Run