My hot take is that Darth Vader is actually Luke Skywalker's father Anakin Skywalker. I don't think that Vader killed Anakin. I think that Vader IS Anakin.
You seem insightful about that character so I wanna get your take on this too: do you think the guy playing the role of Vader didn't speak his own lines? Like that's some kind of clue about who he really? idk, maybe I was just high when I saw the movie, but something seemed off