I’m really surprised the writers never allowed Rey to actually use her yellow lightsaber in Episode 9 (except for a brief shot moments before the credits roll). In ROTJ, the final installment of the OT, Luke whips out a cool new lightsaber with a unique color that had never been seen before. It’s uniquely Luke’s weapon, and he uses it for the whole movie. I’m surprised they didn’t do the same for Rey, but instead kept the blue one for all 3 films. (Wasn’t that Anakin’s saber? I try to forget these movies.)
Bizarrely, unless I’m remembering wrong, the previous movie (Last Jedi) even set things up so that Rey would need a new lightsaber in Episode 9. Isn’t there a scene in Episode 8 where her lightsaber is ripped apart? You’d think that would nicely segue into a new, personalized lightsaber for Rey in Episode 9. But I guess not.