apparently lucas has said in the commentary that obi wan and yoda taught him during his final moments
the most pointless in my opinion is all of the slapstick cgi humour like the floating ball droid laughing and then getting bashed on the entry too mos eisly as well as the big ol fucking dinosaur and the jawas falling off it they both look like shit and dont fit into the theme of the movie
its still possible for people to become more powerful in the force and learn more about it while your a force ghost so it makes sense that a force ghost could also be pulled to the dark side and since anakin wasnt as powerful in the light as he was in the dark at the time of his death he could still be being pulled by the dark side when he is a ghost
i think it would make sense to see a still conflicted anakin and it would be an interesting development in the story
it would be cool too see a force ghost that is torn between the light and the dark like in the concept art
