Short version, NO SPOILERS: it was a triumph, I am so impressed by the cleverness of the storytelling and meta-closure, and by how much heart it had, and how much love for the characters and the fans shone through.
It wasn’t perfect. There are a few things I want to dig into. Some of those things are inevitable consequences of the realities of making films, and although they sadden me, I think the film does the absolute best it can with those realities. Others I’m a little more critical of. Overall, though, my feeling at the end of the film was satisfaction. A closed loop, a complete story, a victory that came at appropriate cost.
Longer version below the cut. Spoilers abound.