When it came time to release it, he sat back, looked at what he had, and decided what story to tell... breaking down things, removing things, and adding things.
It's ironic that they had to delete some great scenes because of "time constraints" that he puts on himself, but that the whole ending sequence could have been tightened like how some of us have done it ...myself included... without removing Vader if his wish is such... lol...
But he seems to simply waste out time with things... I suppose to cover up the flubs...make them not last as long...
But yea... he films sooo much stuff... I think that anyone not paying attention would get confused...and then of course, there's when he takes stuff from green/blue screen and decides "I don't want this on mustfar! I want this on my back porch!" and then we wonder why the tea cozy doesn't end up in the right hand! lol