Give me a decent handheld/console hybrid that has a full library of cross-play games, a decently supported virtual console system and graphics as good as Wii U and I'll be happy. Don't know about the rest of the world though...
Nintendo's best chance is to exploit their current level of dominance over the handheld market and piggyback on that success with their console strategy. The Wii U is, after all, just a massive DS.