I have a feeling this game is going to be a success just because of the novelty of the idea and the gameplay looks fun and entertaining. Although it will most likely get bashed to all hell by the media because its too kiddie and it doesn't have enough gray or tan in it.
EDIT: Geoflcl, Always one step ahead of me aren't you?
Dammit. I wish I still had a Wii. This game looks great, even with it child appeal. The animations look so smooth, and the gameplay looks really great as well.