Well, Mando travels all over the galaxy, so he’s open to visiting Batuu. I’ve read books where Obi-Wan has left Tatooine, so it’s possible he could travel off-planet during his series. Same with Andor. Same with any of them, honestly.
The sequels are done, for better or worse. They‘ve already moved forward with Mandalorian, which the fandom seems to adore, Bad Batch seems to be doing well, and they’re working on a bunch of new TV series and a few new movies. They’d be insane not to incorporate this stuff into the land.
One of my favorite details of Galaxy’s Edge is how lived-in it looks, almost like it came right of the original movie. There are blaster marks on the walks, droid and alien tracks in the ground. There are so many stories there. I think it can be from any point in the universe.