Im just looking at the Will Wright Spore interview on IGN and one bit interests me:
IGN: Do you have any ideas of how the game (spore) would play on the Wii?
Will Wright: We've been messing around with the Wii dev kit and we're really interested in the possibilities there. It's possible the editors might be more manageable on that system. The DS is also very interesting to us, as its control scheme could be very manageable for the game.