World building is overrated. It’s one of the many things that killed TROS.
I actually felt like there wasn’t enough world building. There was way too much exposition, but exposition and world building aren’t the same thing. World building fleshes out the movie’s universe, giving it the proper context. Exposition is an inconvenience, something the movie just needs to get out of the way.
In my opinion, a proper example of world building would be explaining the whole thing with Palpatine’s return. “Secrets only the Sith knew” isn’t a sufficient explanation. We need to know the broad strokes of how he returned, and why he can’t return again. Otherwise, it just feels like Palpatine can come back any time he wants.