What deserves to be Remastered on CD?

Now I don't mean or want for this to become a digital vs. analogue discussion! I have a modest CD collection, around 300 titles, but all are the "best" recordings available. This being said, I have about a dozen or so CD's that haven't been remastered since I first bought them in the mid-80's! The difference between these early AD remasters and what's been produced in the last few years is astonishing! So lets hear it; what needs to be remastered in your CD collection? Some of my votes would include Peter, Paul & Mary, The Doors, The Who and many others! Too bad Mo-Fi isn't still around, they probably would have gotten to some these by now!