brimforge said:
well, yes we DO need another Jedi to mask the fact that "Anakin" is Lukes father ...
but there is one other thing, that Obi-Wan or Leia mentions, that never got made or is seen onscreen: how he helped Bail Organa and fought with him side by side (in the "Clone Wars") - THAT should have been in "Episode 3" and more interaction with his pupil(s)
the first thing could be achieved by inserting another actor, the later would ask to remove Jimmy Smits and cast a new Bail Organa (not sure if there is enough material to support interaction with Obi-Wan)
Maybe Leia's "side by side" can be removed?!