I wonder if at any point developing Rotj, George considered making Luke into “Luke Vader” and keeping Anakin a separate character than Darth.
You may be on to something there. After all, in both of the drafts of the scripts that George wrote prior to Kasdan coming aboard, Luke’s father is never called Anakin; actually, he’s not named at all (though the name already had existed for quite some time). Also, there’s no “certain point of view” stuff from Kenobi in these drafts either. 😉