Afterwards, their visit would leave the heroes of the MCU wondering if such a team exists in their own world, leading to that eventual reveal later on.
Plus, how cool would it be to see the MCU heroes react to Johnny Storm resembling Steve Rogers?
When it comes to what takes them there, it could be anything from an interdimensional issue to a regular exploration mission.
Marvel Studios has hinted that the First Family is indeed coming to the MCU at some point in the future, yet why not usher them in with a salute to the original team?