They don't need restoration, but new transfers to really get all the detail out of the films. Raiders had a full scale 4K job done by Ron Smith before he left Paramount (he also did Ten Commandments and the like) and so I have some faith in what the eventual product will look like. That said the new 35mm print has issues and seems to be a bit revealing of the work that was done. I don't know if it's quite the same film that was released in 1981 visually.

Jaws looks as though it will be tampered with so that the Blu-ray will look nice, but in no way indicative of a film release din 1975.

-1 interesting tests with the FilmGuard. If it goes successfully are you going to use it on selected damaged parts?