The problem with the big 3 is that there is no reason for them to be on the same team except for iconography and that's not worth just having 3 white guys. You can build a team around them but that's not worth doing if you're like Aaron who doesn't want to write any of them or Hickman who only needed Tony and Steve. Even Busiek's team didn't need Iron Man. The last time you needed all 3 of them for a story was Siege, and the last time you needed all 3 of them for a team was the 60's. So if an Avengers team wants to have all 3 of them they better have a good reason for it. But I shouldn't waste my breathe explaining what rosters need when this franchise can't even get a good book anymore.