If Lucas had in his notes back in the early 70's, "I will end Episode VI with Kenobi, Yoda, and an old Anakin, probably older looking then Kenobi. And then when I film the Prequels, I will change that person in Episode VI through computer technology(which isn't possible but probably will be in the future) and put in the actor who played Anakin in Episode II & III."
I will bow down and never bitch about the Special Editions ever again;)