But thats the thing, JJ made the beginning of the story, he made Finn a janitor Oo
If the end of the Sequels was the Last Jedi, for me it would work as a masterpiece, RJ ending is way better than JJ in ROS.
For my part, i believe Trevorrow's take on the story would likely have helped a lot of fans disappointed by TLJ to accept most of Johnson's decisions.
One can never really tell if a unreleased movie can bring all the promises of a script it's based on, but if Trevorrow's episode 9 had, it would have been a very satisfying conclusion as it didn't try to correct TLJ but draw on it to conclude all story arcs.