The lights are on
I have no problems with the controller and I'm sure that Nintendo will have some suprises in the future that will turn heads. However, I probably won't buy the Wii U (sounds vaugely like an emergency vehicle siren sound) until I see some Retro Studios love. Anything Retro is an instant system seller for me... which is why I didn't have much Wii buyer's remorse (or 3DS, now I see that they're assisting in the development of Mario Kart. DKCR-based tracks?).
I believe Retro Studios was the first developer to have the Wii U development kit. So they've been working on something for a while.