First, I'd like to state why everyone is talking about the next Zelda game when it hasn't even been a year since the most recent one?
Personally, this is what I'd like to see.
For the Potable Console, the 3DS, I'd like to see a darker Zelda. The portable Zelda games have all had Toon link, and were much happier and they used kid link. I'd personally like to see an adult, or a teenage link, a darker world, similar to that of Twilight Princess. I'd truly like to see the graphical capabilities of this new console. I want to see if they will continue to use the same old look. Many of the games coming out are cartoony, Paper Mario, for example. So It would be an interesting twist.
As for controls, I'd like to see the control pad be used for the attacks. It would be interesting, vertical attacks upward, diagonal attacks, spin attacks, etc. It would be an interesting twist, instead of button mashing or Sliding across the touch screen. IN this game, Touch Screen= Puzzles and Inventory. I'd like to see some cool new items as well, maybe even some NPCs.
As for the Wii U Title, I honestly don't know yet. I want to see what they do with the first few major games for the Wii U, get a good look at its Graphics first hand, and then I'll make a decision. Smash Bros. 4 May give us a good look at the graphical capabilities.