The first person hired to direct Episode IX was Jurassic World's Colin Trevorrow. Bizarrely, in an early public appearance, Trevorrow claimed that he wanted to shoot the movie "on location" with IMAX cameras literally "in space." Because if the Star Wars series has one nagging flaw, it's the sheer phoniness of the black abyss of space, and not, say, the giant laser-blasting ships manned by gruff squid-men in said space.
Reportedly, Lucasfilm wasn't happy with the script Trevorrow wrote with partner Derek Connolly (of Monster Trucks infamy), so they brought in the guy who penned that nonsensical Harry Potter play. Perhaps unsurprisingly, the man who introduced Voldemort's sex life into the Wizarding World also didn't cut it. And according to one anonymous source, Trevorrow was also kind of a jerk about the whole thing.
It likely didn't help matters that during this time, Trevorrow's passion project, The Book Of Henry, was universally panned, and then flopped at the box office. If you need further evidence that Star Wars really dodged a bullet, Trevorrow claimed that Book Of Henry (a dramedy about a dead child convincing his mother to murder their abusive neighbor) was a "carbon copy" of A New Hope. So Trevorrow was canned, and J.J. Abrams took the gig. Thick glasses frames and plaid shirts don't grow on trees, after all.