A crucial problem with cryo is that freeze is now often more annoying to party members or useless than it is useful.
In Challenge mode, most parties will want to go to a corner so mobs will gather faster to be burst down with AoE (typically inquisitor’s flame).
In Velcoffer, freeze does not apply to the monsters and most of your utility is therefore gone (you’ll have snow rolling but that’s pretty much it…)
One positive side is that the Hydra card can make a freeze oriented dps build stronger, but it will be situational.