If you could make a ride at Disney.. where and what would it be?

If you could make your very own ride at Disney, which park would it be in? (Magic Kingdom, Epcot, Disney-MGM Studios, or Animal Kingdom) What would it be.. an why!

I would have a Nightmare before Christmas Rollar Coaster/sing-along, in the Magic Kingdom. Because It would fit scary/fun of Jack Skelington and yet the memorable songs would be included. It would be a small coaster.. that went into and through Halloweentown, and ultimately christmas town (with real snow...machines heh) and at the end of the ride be greeted by Jack,Sally, and the rest of the cast!