Zelda fans are fickle. This thread is a textbook example of this.
I think they've hit all the right notes at one point or another in 3D Zelda's post-N64 career.
Wind Waker: amazing amount of character, cartoony style helps with this, but it was ALL cartoon
Twilight Princess: Gameplay is great, dungeon design is great, but world is overall pretty lifeless. Large lack of character.
Skyward Sword: IMO the ideal graphics style for 3D Zelda. Perfectly combines the colorful world of Wind Waker with a more realistic/grownup style (like Twilight Princess). However lacked any kind of real open world (not much exploring to do in the empty sky with a map of everything) and was a pretty easy game.
Take Twilight Princess' open world/swordplay/difficulty (although preferably make it even more difficult), Wind Waker's character, and Skyward Sword's graphic style, and use that as a base for the next Zelda and you should be good. Just make sure the new gimmick doesn't screw everything up.
Anyways this still looks like shit. Put the cel-shading back and turn off bloom etc etc.