I would like to see some kind of evidence that suggests the X-Men films (or any of the others listed) are P&S/cropped and not opened-up.
Robocop Director’s Cut Criteron DVD @ 1.66:1 AR is excellent and I don’t think a full screen version is needed.
Spider-man 1 & 2 are best watched full screen, Spider-man 3 would be too, but no full screen version exists.