I have enough faith in Mappa doing an awesome job with the Extermination and the Preparation arc.
With Culling Games they have what it takes to make it better than the manga, or at the very least make it feel less wasteful. They sure as hell should do 1 anime original episode doing the Tsumiki/Megumi relationship episode Gege never cared to do in the manga and basically destroyed his vision for that arc
Sukuna vs Gojo it's a slam dunk.
Rest of Shinjuku showdown....

the only way Mappa could salvage it is by just focusing on making the fights looks amazing but the problem of things feeling unearned, binding vows breaking everything the audience was taught throughout the story and using convenient flashbacks to explain how the gang had
everything figured out before the fight even began...No idea how you can adapt that and not feel as hilariously lazy, rushed and uninspired as in the manga
I'm still trying to figure out why Nobara's mom was important. Did I miss a manga chapter or something? Why did Gojo cared to that level for Kugisaki to reconnect