For my game, I finally get to work on the FX. One of the powers is a sort of Mei ice wall. Not as much utility, just a blocker, at least for now.
It has to pop up fast, so very little anticipation. I'm happier with the spawning than the de-spawning. For that, I'm thinking of making a ground crack decal fade out over the footprint... something.
The ice debris is also supposed to have some collision with the ground (most does fall through) but for whatever reason when spawned from the BP it doesn't... not an issue I going to track down yet, just a note.
Animation wise, I think its not as crisp as it needs to be. Its a little mushy, vs snap and poppy. This is probably 60% "there", and the last 10% is always the hardest.