Did you look at the eShop games? I'm probably getting Little Inferno (from the makers of World of Goo) and Nano Assault Neon. And maybe Trine 2.
So I've bought the premium pack with NSMB U and as theres nothing else I won't ive been looking at wii games and got Mario Galaxy 2 (£12 bargain) but not sure what else would be worth picking up to play at some point in the future.
Ive got a god loads of game over the last 4 weeks and now new console so any wii game will just be there for later once I've had my share of the games I've got now.