Depends on the game. Some games would benefit from prequels, sequels or simple revisits. Games that totally don't warrant a remake bother me. Without playing the remake of OoT I was scepticle, still am, and would rather see it on the Wii. So I'm hoping we see something like MM remade.
Overall, if there's going to be a remake of a game, I really want it to feel like a remake and not a re-release with updated graphics. I feel the developers really need to put a lot of effort into a remake at the risk of seeming lazy otherwise.