Sounds interesting. But I like Navi/Tatl having a personality of her own. Turning her into a random dot on the screen that somebody else controls would kill the character, imo.
Unless you gave player 2 more control over the fairy than they were given over the startbit pointer. Say the kept the fairy 3D, and player 2 could actually maneuver them around to do things, like explore a bit, or light up a dark room, etc.







