Of Quantumania had been better recieved and Majors had not been arrested, we'd all be watching the lreassembled Avengers fight the Council of Kangs today in theaters. How would it have opened?

I'd say similiar to Age of Ultron, perhaps even lower. Without Downey returning there's not really a huge hook to bring the Endgame audience back, but the numbers for a full on ensemble couldn't drop that low, not yet anyways. I'm guessing the plan for Secret Wars wouldn't be altered too much and the audience would already know that's where the juice will be.

$185M / $430M is my hypothetical guess.

Also, in this scenario, Thunderbolts and Fantastic Four have already been released.

No Downey hurts but I think F4 coming out first probably saves it and it still makes 500m. Unless rushing so many movies leaves to fatigue? This definitely felt too early for an Avengers movie.

Think it depends on who was in it and what not. Honestly glad it crumbled, Quantumania was lame