There are many scores that are deserving of a release, especially in their original and complete form.
I'd like to see released:
The Full Monty - Anne Dudley Lawrence of Arabia - Maurice Jarre Midnight Express - Giorgio Moroder The Milagro Beanfield War - Dave Grusin Thoroughly Modern Millie - Elmer Bernstein Titanic - James Horner
... and many more!
What Oscar-winning or nominated scores would you like to see released?
I'm sure there's a lot more that I would want, but as of right now, the only two I can think of are Rozsa's A Double Life (win) and Friedhofer's Joan of Arc (nominated).