My problem is Anakin is not the good man Obi Wan spoke of.
Nor was he a good friend.
The character motivations make no sense in the story. My whole opinion is Anakin turned to the Darkside because he was dumb and was tricked by a lie. A lie so transparent only a complete simpleton would fall for it.
That lacks power as a story. There is no hubris in trying to do the right thing and thinking the ends justify the means. He is just duped and a moron.
A less than 2 dimensional character. There is no human compassion or character in him in those movies to make Luke want to save in in jedi.
My biggest problem with these movies Lucas has a strong visual sense so he uses that to try and hide the fact that he cannot weave a consistent narrative that makes any sense or is powerful. If this was supposed to be Dante's inferno, and Milton's paradise lost it was the worst version of those archetypes ever conceived on video and not film.
Lucas idea on these films was that if you shot enough footage and coverage you could create the story in post. Why have a usable script when you can just do it all on the fly like he did in film school, cinema verite and all that. He used those horrible scripts as a guideline to shoot the footage but the dialog was atrocious and he thought he could compose the performances in post also so he would combine multiple takes and so on, or film actors separately but then splice them into the same scene when the actors are talking to an empty greenscreen set which is claustrophobic and not conducive to a ensemble film.