The do have animations, like in MBII. For some reason they don't move hardly at all ingame though, which I couldn't figure out. They can be hard to kill, but force lightning makes it pretty easy to beat them. I wanted them to be only slightly harder than the hazard troopers that they replace, but not so much that it's impossible. They look good, but I wish I could get them to look better. Or at least move more. They even have a rolling animation!
I agree, I think they got it right in that game with them being hard to kill, because that's the impression you get from the movies.