Lesse, when did u post this? Ah, the 17th. Sorry for not seeing it earlier, I don't check the site often enough. Now... Hmm... I haven't experimented much with the animations, it would probably be found somewhere under the ant (animation trigger) tag, I think. If you imported the elite recursively I'd expect you to already have it though. It may have something to do with the 3p view and the fp view messing up. For example, the reason you can't be a spartan with the energy sword is because it doesn't have the animation, etc. I don't think there's any way to make the elite change color depending on team, unless you swapped the elite bitmap with the cyborg armor bitmap. That might work.
Then, for skinning things within a map file, the only way to do that is to simply do what I mentioned above, swapping bitmaps for other bitmaps. You can't inject your own skin because that changes the bitmap file, and there's no way of changing the bitmaps without changing... well, the bitmaps. But you can swap them. Experiment a bit, see what you like. I've made alternate skies by swapping sky/clear afternoon with things like elite/bloodsplatter, and a bunch of other fun stuffs. My suggestion for the animations is to ask over at MGM, however, since I have no idea how you would do it. If all else fails, just make the melee impossible to use. Sure, there's no melee, but at least the game won't crash. Good luck.