Without a word of lie, I am genuinely excited for them to reveal more on Metroid Prime: Federation Force. I don't understand the hate... it seems like a unique concept. Plus it IS Metroid's 30th anniversary, so chances are they have another game up their sleeves, and Federation Force was just a taste test
For Zelda, I actually am excited to see what celebrations they do. They did some really wacky stuff for both The Year of Luigi and Super Mario Bros 30th Anniversary, and I feel like the March releases are just barely touching what else they have in store. Possibly another spin off title? Zelda Wii U?
Pokemon has already been confirmed to have some new stuff as well for the 20th anniversary -> I honestly think we will get the next gen of Pokemon... and not get Pokemon Z at all.
As for Mario, there is never any telling what they will do for him. I would LOVE a new Paper Mario game and a new Mario Galaxy game with a Spring 2017 release. I'd also love another Mario Sluggers game, but they always surprise us with Mario.
I feel like next year's holiday season will be PACKED for Wii U! Paper Mario U, Zelda U, Metroid U and Animal Crossing U! Then, I think they will release Mario Galaxy 3 as the final MAJOR Wii U game in spring 2017, before the launch of the Nintendo NX in November 2017!