LoL! A fishing spin off would actually make sense :D
But I really wouldn't mind seeing a spin off with Zelda as the main character! Would be kinda cool; the game could take place parallel with the Main Zelda game, just seen from a different perspective or something like that, or it could be a prequel...
I can't for the life of me remember whom it was that suggested a sneak action spin off featuring a guard from the royal army (or something like that), but the dude had some really intriguing ideas about the whole thing. Whomever you are, speak up!!
I'm on Twitter @DanneSandin!
Furthermore, I think VGChartz should add a "Like"-button.