For all that most people still seem to hate The Rise of Skywalker — (heck, I didn’t love it when it saw it the first time; but when I finally tried a rewatch, almost (almost!) everything I’d initially found disappointing suddenly clicked into making sense, now that the Last Movie Ever!! expectation lenses could be dispensed with) — there are a number of story seeds planted in it that I would really like to have seen more of, in some hypothetical followup. Finn’s apparent Force-sensitivity; Lando and Jannah’s new search for his daughter, who might very well be Jannah; D-O as a droid with PTSD, being humanely drawn back out by Rey; Rey’s new quest to continue the Jedi tradition; rebuilding the galaxy for good this time. There’s a lot of potential there, and I hate that the general Received Reaction seems to have made Disney afraid to just get on with it and ignore the inevitable mass sniping.
I myself am not a huge fan of the Yuuzhan Vong as an enemy race, but I kind of mainly know the basics without having read any of the specific tie-in stories for them. YMMV of course. 
