If only George had relinquished control and given directorial duties to others like with the OT it might have worked out better. But by that stage he believed his own legend so having another film like ESB with the likes of Kurtz and Kersh having creative input was impossible.
No, that’s not true. Lucas actually didn’t want to direct the Prequel Trilogy. He asked three different directors to direct the Prequels, including Steven Spielberg. But all these directors rejected his offer and said that he should do that himself, since they all trusted him and were convinced that he would do a great job. So, it’s not that George was arrogant, complacent or excessively self-confident, it’s just that he was forced to do it himself because everybody rejected his proposals. Also, what you’ve described is exactly what happened with Indiana Jones and the Kingdom of the Crystal Skull. In that movie George was the man of the ideas, while Spielberg was the director. Guess what, everybody hated that movie anyway. So George having more control over the movies is not the real problem here, because people got what they wanted and still complained about it. In my opinion, the real problem is that people had too high expectations back when the Prequels were coming out, so it was virtually impossible to satisfy everyone. Of course the Prequels have some problems, and I’ve listed some of these problems in one of my previous posts. But I still think they’re not the disastrous movies everybody here like to depict them as.