from another thread:
It’s a neat idea, but it looked downright absurd. I don’t buy for one second that I’m seeing an old Alec Guinness sword fighting. And as others have said, it doesn’t match the look of the film at all.
The camera moves, cinematography, lighting, color grade, editing, costumes, etc. are so different that it would be extremely jarring to include this in any edit, imo. Perhaps someone could find a way to squeeze in a few quick shots, but it’d be tricky to match the surrounding footage.