What if Nintendo made a Zelda game where you played as Zelda, disguised as Sheik, during the seven years Link is sleeping in the Temple of Time?
Aside from Impa in Skyward Sword, there's not much we know about the Sheikah, retainers of the Hyrule Royal Family, and why they all disappeared. And what of Hyrule's "dark and bloody past" in the Shadow Temple? Could the Sheikah and their disappearance have anything to do with it? There's a whole chunk of lore and story and money to be made from such an idea!
-Stealth-action game complete with Sheik's gear and abilities from both OoT and the Smash games.
-Explore the secrets of Hyrule hidden by the Sheikah.
-Learn the ways of the Sheikah.
-Follow Zelda's quest as she copes with the loss of her kingdom, her own disappearance in her people's time of need, uncover Ganondorf's plans, and help set the stage for the Hero of Time's own work.