I'm more for remake games that go further than mere graphical improvements, though. I don't think it would work for the first two Monkey Island games so much, because they're seen as such classics, and also the plots are so unique. But Simon The Sorcerer is basically a remake of Monkey Island, so a remake of STS with expanded plot characters and gameplay would probably work.
Another example of a remake would be The Last Crusade, but not Fate of Atlantis. You see the difference?