A spin off just about her would be a great game. What does Zelda do on her own adventures? What is it like for her to walk around in disguise and avoid capture? How much does she know about Hyrule and its hidden wonders? Where does she go on her adventures? Tell us more about her background, her history, her powers. While we're at it lets expand on the character of Impa as well. She is another awesome strong character. What about her past? I want her to have a game as well.
A Legend of Zelda game that allows the player to play as someone other than Link probably will not happen because playing just as Link is tradition and I'm fine with that but Zelda is a great character and would work wonders as a main character. It would be great to have a game that stars a female character that isn't running in terror from monsters or winking at the camera as she waggles her butt at the enemies.
Swing that sword Zelda! Girls can be heroes too! We're not just decoration or damsels!