Cause it be great for them to team up in stories.
Well if Marvel makes Avengers, X-Men, Eternals: Judgement Day the sure they can make that happen
Crossovers? Yes.
Movies that acted their version of Civil War when they fight each other? No. The MCU Doesn't need any of those after Civil War. You can't save Inhumans vs X-Men or Eternals vs Avengers AXE Judgement day just like you can't save Civil War 2.
What do you think?
