I believe in Nintendo. They turned the 3ds around, and I trust they can turn the Wii U around. I think the main thing to show would obviously be their main franchises (Mario and Zelda.) A game that many people ask for, like a new Baten Kaitos, or F-Zero. Then announce more jrpgs, because honestly, I think the load of jrpgs on the 3ds turned it around a bit.