I think having a second quest with the game would be a great thing for Nintendo to do. Once you beat the game, you could get the option to play the second quest. But if they were to do this, they would have to switch some stuff in the over world. Maybe switch the dungeons around (like the original Zelda). They would have to have the enemies do 2 to 3 times more damage then the regular quest. And they should move the collectible around, and have it feel like a fresh experience with the game over again, maybe has the world mirrored also (like Master Quest).