Lucas has lost it in my opinion. TPM and AOTC were boring movies. If you are making a kids series, you don't talk about political disputes over trade routes in the opening credits.
A major problem with the prequels is that he ignored the OT. Kenobi states that Yoda trained him. Sure you can retcon it into Yoda trained all the younglings or that it is easier to tell Luke that Yoda trained him instead of telling Luke that Yoda trained the guy who trained the guy who trained him, but he deliberately ignored that link to bring in Qui Gon as Kenobi's master. Leia's memory of her mother is laughable as well. The whole three seconds that she saw her does not a memory make, regardless of the Force.
This X 10000. I don't hate the prequels as much as most, but there were so many lost opportunities. For example, the Falcon should have been in there, somewhere, and Kenobi should have been on it. Fans went CRAZY when they saw the first shots of the Falcon sets for TFA, and even more so for the appearance in the trailer. For a guy so keen on compositing a shot to call back to a scene from a previous movie, Lucas is totally tone-deaf sometimes.