Interesting idea , I think it's cool however isn't doing something like that going to be sorta hard to make? If you ask me , I'd rather upload my own images to use as armatars , still good idea
I think it would become anoying very quickly if all the armatars kept on repeating the same movement over and over. I know I would get tired of them moving all the time.
This idea is not bad, maybe the armatar would move after you mouse over it. Personally I do not care a lot for the idea but I would like an option to turn off the animations or make them move only after you perform certain actions (like mousing of the armatars).