I [Hate] playing [Frost], but I'm interested in changing that. This is a build I'm considering, since [Icy Avalanche] has at least a little bit of potential. [Frost] typically camps in one spot, so Dispensary is my subsume of choice to assist in Avalanche spam.

To make room for Dispensary, I replaced Ice Wave. As much as I [Hate] Snow Globe, it is situationally useful so I kept it. And if you use Snow Globe, it's useful to have Freeze available to be able to pop bubbles when needed. Ice Wave is a cool ability (pun), especially with the augment, but its redundancy makes it replaceable. If they ever remove the [Frost] 1 > 3 reliance, though, it would make more sense to replace Freeze or Snow Globe as desired.

I haven't finished the build yet, but it might be worth testing [Umbral Fiber] vs [Vitality], since [Icy Avalanche] health is a thing.