Then Bucky and Sam would fight on who will be the next Captain America in The Falcon and the Winter Soldier. Then Iron Man will get his own 4th movie like Thor. Or Iron Man might be in Doctor Strange 2.
Tony was done after Endgame, dude was pushing 50. He ain't showing up until Doomsday. He really didn't even wanted to fight in Endgame but was dragged into it cause it was a way to bring back his Dead adopted son.
