That looks almost exactactly like the build I am playing with Yeti. Unfortuatly I am finding life quite difficult with him at the moment! 
I really should do something about this signature.
Hmmm looks nice 
though I would not take Stealth my dom atm has that, and I hate it -_- it's useless I would trade it for TP Friend for jack which I have anyways ... or maybe Aid Other. but this is just my opinion
I don't know who I am to advise since I'm only level 36. 
But anyway, it looks good to me (although I'd never give up Glacier, not when I have Power Boost). Slows in CE might be a bit of an overkill if you're going to run it together with AA, though. I don't like slow enhancements much because they don't affect -recharge.
Dont think 3 confuse dur is worthwhile in AA, I'd probably slot 1 slow, 1 confuse the 3 end reds then move the 6th slot to a second end red for Chilling Embrace.
Would also dump something for hasten, probably stealth, hasten really helps a dom if you hit it just before domination baqr is full. Its duration is slightly longer than domination, will help you get the last of the bar full and then take full advantage of the hold and damage boost
"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!"
Given my experience, when I get my next respec (whenever that is) I'm going to pick up Hasten and SS, dropping stealth.
I really should do something about this signature.
Well, with regards to the Hasten thing.... I currently have hasten on Wynter (only 1-slotted, but still) and have never been in a position where I actually needed it - things recharge fast enough with the slotting they have, the extra boost has never really been necessary.
Three confuse durations in AA may be too much, I admit, but then this is the first time I've had the power, so not really sure what is too much, and what isn't, etc.
In my build I left hasten out mainly beacuse I don't activate Domination as soon as I get it -_- most, of the time I forget I've got it ... Also in my AA I have 3 confuse and it works for me keeps teams alive beacuse of the confuse
I left out hastan originally because of my endurance problems, but now I am finding my domination bar is often full but I'm still waiting for the power to recharge. I wouldn't mind having glacier available more often too.
I really should do something about this signature.
I personally find that confuse durations make a visible difference in AA. I have two now and am planning to add a third at some point. But that's just me
I agree that Hasten would definitely be worth it for a Dom. The only reason I don't have it is because I can't stand the idea of hands on fire for my Ice dom. Most people probably don't care about a style-over-substance reason like that 
Actually style over substance is one of my pet peeves - which is why /thermal dominators get politely asked to stop putting the fire shields on me - I'm a being made of ice, dammit, do you WANT me to melt?
Hasten was taken purely because I wanted superspeed, and flurry seemed vaguely ridiculous - but since I'm aiming for superjump now, I can quite cheerfully get rid, since I very rarely use it during a play session.
Having thought about it, glacier is useful, if only as a panic button on teams (thats the only time I use it) - so it may take the place of CE on the above build - it only ever gets 4 slots anyway (2acc, 2 hold duration)
Now I don't have an Ice/ dom but I'll make some observations:
I'd not drop glacer, an AoE hold is a great team emergance power, and I find AoE hold + single target hold is a great combination for holding bosses when you don't have dom running.
I'd replace one of the slows in chilling embrace for a 3rd end reducer, I know from my ice tank that chilling embrace is a major susvival toggle, it's a nice -damage(15%) and -recharge(30%) nether of which the slow enhancements will boost. SO it needs end reducers ti keep it up for longer. (oo er misses)
Doms dont get the -15% damage
"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!"
Well, having almost reached 40 with Wynter, I've noticed a couple of things - 1, I always seem to end up in melee regardless of the team size or mob type (its the swords, I just love the swords....), and 2, I almost never use Glacier. So with that in mind, I have a respec planned for a much more melee-centric Wynter....
---------------------------------------------
Exported from Ver: 1.7.6.0 of the CoH_CoV Character Builder
---------------------------------------------
Name:
Level: 41
Archetype: Dominator
Primary: Ice Control
Secondary: Icy Assault
---------------------------------------------
01) --> Block of Ice==> Acc(1)Hold(3)Hold(3)Hold(5)Rechg(23)Rechg(29)
01) --> Ice Bolt==> Acc(1)Dmg(5)Dmg(7)Dmg(7)
02) --> Ice Sword==> Acc(2)Dmg(9)Dmg(9)Dmg(11)Rechg(34)Rechg(34)
04) --> Ice Sword Circle==> Acc(4)Dmg(19)Slow(19)Dmg(21)
06) --> Combat Jumping==> EndRdx(6)
08) --> Hurdle==> Jump(8)
10) --> Ice Blast==> Acc(10)Dmg(11)Dmg(15)Dmg(15)
12) --> Ice Slick==> Rechg(12)Rechg(13)Rechg(13)
14) --> Super Jump==> Jump(14)
16) --> Power Boost==> Rechg(16)Rechg(17)Rechg(17)
18) --> Health==> Heal(18)
20) --> Stamina==> EndMod(20)EndMod(21)EndMod(23)
22) --> Acrobatics==> EndRdx(22)
24) --> Arctic Air==> EndRdx(24)EndRdx(25)EndRdx(25)ConfDur(27)ConfDur(27)ConfDur(37)
26) --> Stealth==> EndRdx(26)
28) --> Chilling Embrace==> EndRdx(28)Slow(29)Slow(34)Slow(40)
30) --> Frost Breath==> Acc(30)Dmg(31)Dmg(31)Dmg(31)
32) --> Jack Frost==> Acc(32)Dmg(33)Dmg(33)Dmg(33)
35) --> Greater Ice Sword==> Acc(35)Dmg(36)Dmg(36)Dmg(36)Rechg(37)Rechg(37)
38) --> Bitter Ice Blast==> Acc(38)Dmg(39)Dmg(39)Dmg(39)Rechg(40)Rechg(40)
---------------------------------------------
01) --> Sprint==> Empty(1)
01) --> Brawl==> Empty(1)
01) --> Domination==> Empty(1)
02) --> Rest==> Empty(2)
---------------------------------------------
Any comments, feedback? please?