I think Wii-U will likely have an awesome Pikmin and a half assed Smash Bros for launch or shortly after launch. Also, its hard to say what Retro has in the pipeline, or has had in the pipeline. As well received as DKCR was I can imagine they could have had something on the backburner, though that sounds awfully optimistic. Silicon Knights is working on a couple of secret titles, but you can expect it to be **** unless Nintendo is involved, though if you unscaled the ED engine to a newer console you could shorten development time.
There is probably going to be several supporting third party games at launch, so if you can get get Assassins Creed and Pikmin at launch that sounds pretty good. That's one exclusive title, and a best version title. Just by being a decently powered system it will probably get a couple ports.
Also, back to Pikmin, Pikmin was and still is a pretty game, i can imagine a next gen version of the game looking gorgeous. Also, that Pokémon game I always wanted, I can dream right?