What would be your top 3 biggest entertainment blunders in the last 15 years that had they done it better it would've made a lot more money?

Obviously without saying, the virus that is DEI/obsession with representation has ruined a lot of stuff, but here are my top 3.

1. Not having Luke training Jedi students as one of the opening scenes of episode (could have easily had Han/Luke/Leia and maybe Lando reunite at the beginning, also you could've had Rey be one of his top students and the other Jedi provide an outlet for future stories)

2. Not doing an inspirational Superman movie with Henry Cavill (speaks for itself)

3. Marvel deciding to follow the All-New All Different crap instead of years of better source material for their movies. Why not do a Kirby inspired F4 or the X-Men, Silver Sable, Black Cat, actual Defenders, etc. But of course it makes more sense to push characters who are self inserts whose comic books keep getting cancelled like how they are really pushing Ms. Marvel to be the face of the company. (I know the comic book industry has had issues in the past, but to constantly push crappy female characters or race swapped characters that nobody asked for as well as telling actual comic book fans to piss off is beyond insanity)

Honorable mention: letting some moron showrunner be in charge of Wheel of Time when he cares more about girl power/lgbt representation.

Not sure it cost them money but not having Jon Snow fight the Night King was dumb or at least him and Ayra fight him together.

Lucasfilm not continuing the EU in it's own continuity instead of telling a group of very loyal fans to piss off.

What are yours?