I agree that people become fans because of a certain piece of work, and that if work of the same quality (read: Phantom Menace) is not produced further on then fans get agitated. Trust me, I'm a big fan of the original Star Wars series.
Why I'm arguing that fans are fickle is because something like Darth Vader now screaming "NOOOOOO" where he was silent before, does not really alter the story in anyway. Sure, it probably doesn't make it better. But it's not destroying the SW legacy. It really isn't such a big deal. Ask yourself if you would have enjoyed Star Wars less had Darth Vader's "NOOO" been included in the original. If Lucas thinks the "NOOO" fits the story better now, then I think he has license to change it. It's not like it's a game-changing event - just a new cinematic feature.






