Hyrulian Hero
Zelda Informer Codger
I'm imagining something akin to a KOTOR style game where the story relates to the rest of Zelda only in distant ways. New races that have since died out, a more primeval view of the goddesses, maybe wars over the triforce or perhaps it's a time in which the triforce has been forgotten. I think that it would need to be a spin-off, and as such, the gameplay ought to be totally different. Squad-based war game, tactical episodic grid-based combat, jrpg...something quirky to distinguish it from the distinctive zelda game style.