Once, only once, I'd like to see a Zelda from Ganondorf's point of view.
Basically showing that Ganon is not THAT evil but doing it for the sake of his folks, as he implied in Wind Waker.
Then, the game itself would be like every other Zelda, raiding temples, doing quests, killing HUGE bosses (and bosses need to be even bigger this time), but with Ganon instead of Link.
Perhaps show why he always seems to have the Triforce of Power? Make it a curse, or something like that. I don't know, the only reason I have a problem with a game like that is that, there are so few villains today who are just plain evil. It could just be me, but I think it's getting rather cliche to show a villain who just really evil. Granted, some of the best villains are villains who truly believe that they're evil actions are the right course of actions, but still. I mean, if they made this type of game, I'd still jump all over it like a horny Gohma. I would just hope that it's written well and that they don't alter much from it.
As for what I would like to see? Well, I was thinking actually of seeing if Nintendo could try something somewhat revolutionary and make a 2-Player 3-D Zelda-ish game, in which Link would be the first player and Zelda would be the second player. Link has your standard Link moves, and Zelda could be an archer, perhaps a fencer, or just a primary Magic User as well. The only issue with this type of game is the fact that #1. I don't know if it's even possible, #2. When not having a 2nd person playing, NPC characters are usually stupid and cumbersome, #3. Again, I don't if it could work. The idea seems decent in my head right now, but I can definitely see it's flaws. LoL, this is why I would hope that Nintendo could figure it out for me!
One day, I also just wouldn't mind seeing Playable Zelda as well. I mean, she seems powerful enough at times to be able to get by on her own.