Riceball
Master Member
Sure, it could be cleaned up of specks and dirt, and the colors adjusted, but composited effects are generations away from the original negatives of each element, so they'd never look as good as what they were able to do with SW and ST:TNG.
I'm sure that they could clean up matte lines and rigging that accidentally shows. If they really wanted to take the time and money they could probably roto some of the effects shots and do a little sharpening and tweaking of the contrast some but you're right though, it almost certainly wouldn't be as good as if they had the original negatives to work with.