Having said that, one of the biggest frustrations for Marvel fans stems from the fact that the Marvel Cinematic Universe does not have access to the X-Men lore.
So it seems that Sebastian Stan really wants to see certain characters from the Marvel Cinematic Universe interact with members of the X-Men mythos.
It now seems that we fans aren’t alone in that belief, as three Avengers also want to see the X-Men come over to the MCU.
These two superhero universes have become successful in their own respective rights, but true fans know that they belong together.