Well, I haven't seen yoda or luke because the links aren't working, but I wouldn't worry about ballance issues at this point. Everything you see will most likely be exagerated in power so that it looks cool in the E3 demos and they'll do real balance closer to the release date. They have to get it all working before they do that.
Gary Swift (aka gswift)
Lenexa, Kansas USA
You can try to monkey-proof your program, but you'll never monkey-proof the monkey.