Well that's just the beginning. With Wii Mario they could flesh that concept out a whole lot more.
Lets face it too -- multiplayer on Wii = bigger sales. Mario Kart is one example. You'll still get the 1-player goodness I'm sure.
As great as Mario Galaxy is, I found when I would show it to friends they would want to go back to Wii Sports or Guitar Hero so more than one person could play.







