I had to think a while on this to even come up with something. Honestly, I don't think any changes are needed.
But if LFL just had to make changes, it should be along these lines:
- Digitally redo all composites using original elements (to remove mattes and dupe grain)
- Correct any "errors" (wonky props and sets, effects errors)
- Possibly use cgi to correct bad ship movements (BUT NO CGI SHIPS)
- Possibly use cgi to smooth bad puppet movements (BUT NO CGI CHARACTERS)
- Use the original 6-channel mixes to come up with modern 7.1 mixes that don't sound like crap (NO NEW SOUNDS)
In a nutshell: fix what you have, add nothing new! Basically, they should be the exact same movies, only with the edges polished for modern audiences.