I never thought of them like this to be honest but this was brought up before.

I thought the dish should take down an AT-ST when we first saw their inclusion but some more pronounced effect on hitting an AT-AT leg would help it look better.

I have a question about the shield generator explosion.

If the original explosion was in the vivaldi trailer why was the explosion not put in the film?

I think that it would be great if you could get somone profficient or even very skilled with these visual effects plug in's like fume fx but looking at the shot i think most green screen explosion effects would still be an improvement but the issue is the same explosion across 2 shots at different angles which is why you have to do it this way.

But i have a suggestion for the explosion of the shield generator once hit the ice should start to crack outwards and fracture around it's base along the ground that would be a nice effect i think.