With Ice Slick and slows to deal with mobs while still keeping the Brutes happy, and all the -def in Thorns, you've got yourself a pretty good team build there. Jack will only add to the fun.
Oh ya this is the fastest i have ever lvl'd a toon and ive been playing since before CoV lol. It's so much fun in a group now that i got Ice Slick. Waiting for stamina to pick up Arctic Air cause thats just a HUGE End drain. but ya so far it's just so much fun.
Ice/Thorn is greatly underrated. (I feel /Thorns never gets the kudo's it's due). There's not much to say. If you team alot you should be able to keep pace with a Brute (and someday a tank or scrapper), without breaking a sweat. Add in slows and an exotic damage type (toxic) and this is a pretty efficient build for most mobs. I doubt you'll find any naysayers here.
My level 50 Dominators:
Madame Mindbender 50 Mind/Energy
Fly Agaric 50 Plant/Thorn
Nate Nitro 50 Fire/Psi
Nope you won't! That combo slays everyone and everything! I tried to make one a few times and the weird draws of the /thorns was the only thing that held me back. I wish I could make one and keep with it!
Sup all just comein on to ask opinions of the Ice/ Thorn dom set im working on one now myself and im absolutley loving it. I'm not big for soloing so im constantly running with 4+ people and so far it's just turning out to be amazing. The ability to run into a mob with Arctic air/ Shiver holdin the entire group inplace and just letting lose with THorns is just so much fun.