All of this is not to say that the writer’s task in this situation is an easy one—it’s certainly not.
The truth is, the “Star Wars” universe is really not that rich of a universe, cinematically. At least as long as they keep spending all of their time in one little corner of it, revolving around one family. Surprisingly, after 10 films, “Star Wars” seems severely limited in scope. Even by ROTJ, Lucas found that he had to start repeating himself, with a second Death Star, etc. (Yeah, I know, “it’s like poetry, it rhymes....” whatever.)
The physical embodiment of this limited scope being employed is seen throughout the saga. Luke’s got a secret sister, but she also has to be the only girl available to be his sister in the current cast, “You’ll Be Dead Guy” cameos in two films as the a-hole that bumps into both Jyn and Luke. Greedo is not only killed by Han, but in a TMP deleted scene he was also a childhood friend of Anakin. C3-PO and R2-D2 not only ended up as the property of Luke, but one was built by Anakin and the other served as his combat Astro-mech. Like Anakin, another fallen Skywalker is the secondary conflicted baddie of the new trilogy. Now, Rey has to defeat the same main foe (the resurrected Emperor), on the same Death Star, using a Skywalker family lightsaber. Is it even a spoiler for me to say that she wins and the Emperor is killed (again)? Yawn...
The saga doesn’t feel like a story that takes place in a vast universe, but a story that takes place in a small town like Mayberry, where everybody knows everybody and the citizens of the town are all, somehow, related to everyone else.
I think the farther away they get from the corner of the universe occupied by the Skywalkers, and the more they start to move into new territory, the better things will get, from a more expanded universe perspective. We saw glimpses of this in “Rogue One” and seem to be seeing some of this in “The Mandalorian” (even though the “hook” for the series is, let’s be honest, “kids, he’s like Boba Fett”).