There's some seriously good suggestions in this thread.

Interesting read.

I only want what Miyamoto decides to make.

Fully Orchestrated Music.

What about Zelda Wars a RTS??

Things I want to see in a future Zelda title:

-An orchestrated score.
-All characters except Link have voice actors.
-Involvement from the Goddesses in the storyline.
-Ganondorf wins.
-A game that explains why Link never appeared to stop Ganondorf before the events of the great flood (Maybe Link does appear, but is defeated by Ganondorf... which explains why the people never heard of Link's heroics...).

As you can see, I like Ganondorf.

A++ on Link and Zelda not being cell shaded 10 year olds.

I want them to last more. Facing old bosses is not a bad idea either. Maybe a time attack mode.

Oh, and Khuutra's gibberish idea reminds me of Okami. Okami was the best Zelda clone ever if you ask me. Lasted longer too.

Zelda should be more Kid going on an adventure and less Adult trying to save his homeland and princess.

I just want a play a Zelda game without having the feeling that it is over and over Ocarina of Time.