Still not sure why you keep bringing up “Vanishing Point” (which I did buy as they were flying off the shelf for $5 on Blu-ray). Anyway, YES, a good preservation really, really should maintain everything as it existed originally, that’s the whole point. AFTER it is preserved and there is a good, solid, usable common base version of the film for everyone to start from, THEN custom versions can be made as people see fit (or just watch the film as it originally looked, which is not an option without at least a good preservation).