I’m having trouble coming up with a good analogy from a different franchise. A movie about figuring out how to blow up a Borg Cube? A movie about how Hans Zarkov built his rocket?
Perhaps the best analogy is from Star Wars itself. What if we have a whole movie about how the Bothans got the information about the 2nd Death Star? Or one with Lor San Tekka piecing together a map to Luke Skywalker?
I mean, any movie could be good, but why not just do new things?