I'll put three opinions out there, and let the rest of the watchers and contributors to the thread judge their worth:
1) No one has a "right" to make George Lucas do ANYTHING about Star Wars; it's his baby, and his franchise. He can make it as good or bad as he wants. TO assert otherwise takes something away from someone on a principle I don't like one bit. It's his rightful property, right or wrong.
Now, the good artist knows when to listen to other opinions, and take them into account, and when to draw the line on his vision, and make the final decisions. It's the mark of any good leader to make the hard calls. But if someone is truly believing that all their ideas are the best ones, they obviously delude themselves.
2) The two prequel films aren't nearly as bad as some people make them out to be. The proof is self-evident: The movies are grossing hundreds of millions of dollars worldwide, children are pretending to be Jango Fett and Jar Jar, and merchandise is selling like crazy. I've definitely seen oversold SW merchandise, mind you - but then again, I saw it with the original movies, too. It's just that the stuff became collector's items worth lots of money AFTER most everyone threw their stuff away.
Is it MY Star Wars? Not really. But I can still see them as entertaining - heck, the Jedi battles are entertaining enough on their own.
3)According to IMDB, George Lucas from 1977 to 1999 directed a total of THREE films - Star Wars, a filmography in 1991, and The Phantom Menace. He has FAR more credits as a writer and producer - an idea man. It's small wonder to me that his vision did not turn out as the mainstream expects it - two thirds of our perception of what made Star Wars dynamic is done by different people.