Star Wars Stand Alone Films

I just find it odd that, so far, there have been no major stories of backstage difficulty with the saga movies (aside from things like the Harrison Ford accident, Fisher's death, etc.) but *both* standalones have had Lucasfilm have to step in and say "Nope, not working out. Changes must be made." It seems like there's a different approach for whatever reason.

seems to me that it's b/c once 9 is done, they won't go back to the skywalker story - everything will be the standalones, so that's what they really want to control