I think it would be nice if they scooted away from the Wind Waker style. Don't get me wrong, they are from all that I've heard very good games, but the artistic style always did grate on me for some reason. I'm not sure why.

Part of me wants to see the Loftwings come back, but the popular opinion seems to be "skyfield sucks." Besides that, I can't really envision a way in which they could do this after wrapping up their loose ends with Skyward Sword.

Seeing Epona return would be nice, though; and I agree, a more realistic Zelda would be great to see. I personally found Twilight Princess very enjoyable.