Josh Trank fired and his project cancelled entirely.
Abrams scrapping the original episode 7 script and starting over about six months before the start of shooting.
The Rogue One guy getting taken off his film while whole chunks of it were reshot and edited without him.
The Lego guys getting fired from the Han Solo movie three weeks from the end of shooting, and most of the
movie being reshot on short notice by Ron Howard.
Carrie Fisher dropping dead with one movie to go after swallowing a pharmacy.
Trevorrow fired after the penny dropped that his films aren't very good.
Episode 8 is seemingly the only one of these Disney era movies that has had a straightforward production.