See, the best games and hardware are the ones that are built for each other, especially when the system was designed around a certain game. For example, the N64 was designed for Mario 64. You can just tell from how the system is built: the analogue stick was included to give mario free movement in 3D, the C buttons were added to control the camera around him, etc. The Wii was designed to play Skyward Sword, it just happened to come way late in the console's life.
I haven't yet seen that game for the Wii U. As fun as Nintendo Land looks, it's more likely than not a case of "we have all these awesome features, what games can we make to take advantage of them?" And while there's nothing wrong with games like that per se, the best games are the ones which had the hardware built around them. I'm going to give Nintendo the benefit of the doubt however and assume that they have such a game in development. I believe a Metroid (maybe Prime, maybe not) title could be that game. The HD graphics, the second screen with touch functionality... All those features would be right at home in a Metroid game.