This has been discussed before, Envy did some tweaking, nothing beyond the usual color changes and such. Anyway, links here:
http://www.fiestafan.com/forums/showthread.php?t=813
Edit: I'm a bit tired at the moment, sorry. Just read over your post again. I don't think there will be many people willing to create a ThotBot or the likes for a kids game, particularly a
virtually free one.