Oh, we're giving ideas for a new game? :3 That sounds fun. *thinks*
Speaking of a sequel to TP and change of seasons or something, makes me think about what they did in ALLTP, where you had to change between the Light World and the Dark world in order to be able to finish a dungeon. It would be cool to change between the Light Realm and the Twilight Realm. Annoying, but cool. XD
Midna could have been kidnapped or something, and Link heard of it... and he wants to save her, for she was one of his best friends. Zelda's changed into a fairy or another creature. xD Let's turn things around, now it's another princess who needs saving. (Oh, this could be done to the extreme [/crack-game for sure])