I remember when the extended editions for LOTR came out and the individual movies were still at least 2 sittings.
I know a lot of Snyder fans have come around to think that this is Snyder's swan song with the DCEU but those who haven't? I get that this movie just being on HBO Max is nothing short of a miracle. But, then you still need people to sign up/subscribe and want to sit through a 4 hour movie. And not just fans but regular subscribers. Then it's have to be some spectacular movie that appeals to a lot more people than MOS and BvS did. And then things would have to be put into motion, and maybe after some of the big stars finish their other commitments, they work around Fisher/Hamada, then you'd see a Batfleck spinoff/JL sequel in 2025?