If they release a nice looking smash bros 4 bundle that is when I'm getting a Wii U. I would also like to see some kind of classic Wii U bundle which is skinned like a NES or SNES with a bunch of VC games that come with it.
Super Smash Bros. Wii U or Mario Kart 8 bundle for me (hopefully the deluxe Wii U). If it's cheaper than buying the console and the game, obviously I'm going to grab it while I can. I know it'll be sold out before I can say "curse you Dinkleberg", >_>
Pretty much the only bundle that I would care about would be the console and SSB.
If SSB can use the actual gamepad rather than the tablet controller then it'd be nice for them to include that as a bonus.
Other than that I can't think of any big name games that Nintendo is making that I really want. (The next Legend of Zelda is ok, but I don't know if I care about it enough to buy a bundle for it. Possibly the next Metroid? Depending on what it is... I mean if they go Metroid Prime route over Metroid: Other M then I'm more interested. But if they fix the issues with Other M then maybe...)