For similar reasons (that I’ve touched on elsewhere before) I think the Vader scene should be moved, as it’s placement in the theatrical is kind of a non sequitur.
That’s an interesting idea. I was just imagining how it would play back to back with Rey’s Dream (they both feature a helmet from a deceased warrior), but of course it wouldn’t work there. Were you thinking it should be closer to the final confrontation in order to bring his conflict to the fore?