Lucasfilm does have the story group though. They haven’t interfered with the writing of the films so far, but then again, they haven’t really had a reason to yet. Also I’m sure Kathleen Kennedy would interfere or at the very least hire more writers if Trevorrow were do do an exceptionally bad job with IX.

I agree that Trevorrow might make IX fairly dull, but I’m not convinced Lucasfilm or Disney will allow it to become bad. RO had multiple writers, not to mention plenty of reshoots, and Kennedy fired Trank, so I’m personally not too worried.