To me this is also some of the fans fault for screaming and yelling they want the DVD and the unaltered editions. So Lucas rushes it and as a result we get what we get. They should really hire a level headed fan to proof the final cut. Cause we are the ones who have watched these alot. I was watching a behind the scenes of family guy blue harvest and Seth was interviewing Lucas and Seth hummed a few bars from the hoth battle and Lucas couldn't identify it. He thought it was the throne room at the end of a new hope.
My point is the people involved don't know the stuff in detail. I'm sure anyone of us would of picked up on lukes green saber in empire.