Take Ice Slick at 12. It's your best power and everyone will love you. 3-slot it with recharge. 
I also think that the endreds in Ice Slick and Power Boost are a bit of a waste, but it looks like you have plenty of slots to go around. Still, I'd rather put them even somewhere like Health.
Yeah, I'd take the end reds from Ice Slick, and up the recharge, if you want a 4th in there maybe range would be worth while??! Not sure. Powerboost the same, cant see it costing that much end. If you want to reduce end consumption a 3rd in AA is probably your best bet I guess.
That said I can see nowhere else for your spare slots.
I'd take Jack before Flash Freeze, he can hold for you, but thats down to your own taste.
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
Hey guys, just a quick 'mock-up' of what i was planning for my build on CoV. Any ideas, comments, suggestions welcome as i've not played much with Ice or Energy Melee.
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Name: Dominus Deluge
Level: 40
Archetype: Dominator
Primary: Ice Control
Secondary: Energy Assault
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01) --> Block of Ice==> Acc(1)Acc(5)Acc(9)Hold(11)Hold(19)Rechg(46)
01) --> Power Bolt==> Acc(1)Acc(7)Dmg(9)Dmg(11)Dmg(19)Rechg(34)
02) --> Bone Smasher==> Acc(2)Acc(3)Dmg(3)Dmg(5)Dmg(7)Rechg(37)
04) --> Chilblain==> Acc(4)Slow(21)Slow(21)Slow(37)
06) --> Arctic Air==> EndRdx(6)EndRdx(13)ConfDur(13)ConfDur(15)Slow(36)Slow(48)
08) --> Stealth==> DefBuf(8)
10) --> Hasten==> Rechg(10)Rechg(15)
12) --> Combat Jumping==> DefBuf(12)
14) --> Super Jump==> Jump(14)Jump(50)
16) --> Power Boost==> Rechg(16)Rechg(17)Rechg(17)EndRdx(40)
18) --> Swift==> Run(18)Run(50)Run(50)
20) --> Health==> Heal(20)
22) --> Stamina==> EndRec(22)EndRec(23)EndRec(23)
24) --> Ice Slick==> EndRdx(24)EndRdx(25)Rechg(25)Rechg(36)
26) --> Power Blast==> Acc(26)Acc(27)Dmg(27)Dmg(34)Dmg(34)Rechg(37)
28) --> Glacier==> Acc(28)Acc(29)Acc(29)Hold(43)Hold(48)Rechg(48)
30) --> Total Focus==> Acc(30)Acc(31)Dmg(31)Dmg(31)Dmg(36)Rechg(36)
32) --> Flash Freeze==> Acc(32)Acc(33)Sleep(33)Rechg(33)
35) --> Jack Frost==> Acc(35)Acc(42)Dmg(42)Dmg(42)Hold(43)Hold(43)
38) --> Power Burst==> Acc(38)Acc(39)Dmg(39)Dmg(39)Dmg(40)Rechg(40)
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01) --> Sprint==> EndRdx(1)
01) --> Brawl==> Acc(1)
01) --> Domination
02) --> Rest==> Rechg(2)
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