Most likely maybe.

Personally I think so. The Wii is always gonna have neat stuff, this is just next on the list. Afterwards it's gonna start repeating itself. So why not get in on it now while it's hot?
I think it's gonna be a little less "Neato cool!" then what it really is, that said, I'd pay $50, not $80. Not sure if the price will drop in six months though (when I usually buy a new game). If I had a wii, I'd buy it.