Originally Posted by
Revolutionary_Jack
The question isn't what the story or event is gonna be, but what it needs to do. The way the MCU works is that the appeal is crossovers and character-mashing. It's two steps.
1) Introduce a character and setting in a standalone.
2) Mash them up in a crossover that combines those characters.
This is what led to the Avengers 1. What worked in that movie was the characters had been introduced, we connected to them and then they got mashed in in A1. But then Age of Ultron failed because mostly it was the Avengers from the first movie, with Scarlet Witch added in, and that's it. Infinity War and Endgame was the true crossover since it was a mashup of Avengers, Doctor Strange, Black Panther, Spider-Man, Guardians of the Galaxy, Ant-Man, and Captain Marvel.
Until Endgame, Feige had a status-quo where he needed to work with a set of characters that Marvel owned by themselves. Now he has a status-quo where Marvel owns a whole bunch of other characters like the X-Men and the Fantastic Four.
So more or less Feige needs a big story event that mashes together eventually the Fantastic Four, the X-Men, the Guardians or some other space team, whatever Avengers sub-team that comes up, the Disney Plus stories, Shang-Chi.
The challenge going forward...whatever event happens cannot be an Avengers story or be made into an Avengers story the way that Infinity Gauntlet (which wasn't an Avengers story originally became one). The story needs to be a Marvel Universe story and not really the story of a team.
In terms of Marvel events, there aren't many Marvel Universe stories. What you usually get is events focusing on some characters that eventually pulls others into. War of the Realms is a Thor story that ropes in the Marvel Universe, Secret Empire is a Cap story that does likewise, Age of Apocalypse is an X-Men story.
In terms of Marvel Universe stories, there's just one event...it's Secret Wars. That story mashes the FF, the X-Men, the Avengers, and Spider-Man and their villains together, all united by the one character who is versatile enough to be the villain of the entire MU...Doctor Doom.