That’s oddly specific. I mean I like Nolan’s films, but now that he’s past his “Batman phase” I don’t see him ever doing franchise films again. He’s basically his own brand now, and I can’t imagine he’d be able to work under Disney/Lucasfilm’s restrictions.
A Vader film is also kind of a tricky thing, because how do you craft a film around a character who’s already had six films that’s more or less about him? In my opinion Disney should start animating some of their best comic series, kinda like what Warner Bros Animation does with DC comics. The Vader comic series by Charles Soul is IMO one of the best SW comics ever made (and definitely the best of the current era) and would make for a great animated series or series of short-ish straight to home-video/streaming type movies.