I mean, I think you're hoping against hope. Original anime deviations from basically a completed manga are rare and Isayama does not give a singular fuck to do two different versions. I mean, the dude was so bad he rushed a chapter out just short of a deadline and his drawing errors were thought to be plot hints. This is not a guy that cares.
And the studio is pouring all of its money into Jujetsu Kaisen. It does not give a shit about AoT, a series that is functionally ending. Its not going to put anymore effort than it needs to. It would rather get AoT over with and focus on Jujetsu Kaisen, which is new and popular, which means more money. Especially if AoT ends like shit.
I can't stress how rare deviations are when a manga is basically done. And be careful what you wish for, deviations are usually worse than the manga themselves. Akame Ga Kill! is one big example of this. It faithfully follows the manga until it ran out of material. Then, I fucking shit you not, each episode it killed off a character. Which basically butchered the manga, because the manga is not like that, at all.
Its not like the West where we look at the source material and go, "Ok, this was shitty. Lets make it better." or "This isn't going to translate to TV/Movies, here's where we can improve." Japan very strictly follows manga unless it runs out of material. And usually it ends up like shit. They may also be under contract to just do what the manga does. I'm expecting Eren just beating the shit out of Armin, "OH! ITS A BASEBALL" and a psychotic Mikasa gone insane kissing the severed head of her brother while God smiles in approval.
You're just going to be disappointed if you hope for anything different. Especially if its as popular as
@Truthboi says in Japan.
Good to know that fucking retards with bad taste is a universal human trait.