And if Doctor Strange or Captain Marvel get second films, they would only take the MCU in totally different and opposing directions.
As James Gunn says, his own Guardians of the Galaxy Vol. 3 will begin the new MCU story.
Maybe the future of the MCU will mean no longer will we have connected stories where heroes could share scenes?
One thing tripping me up on the “Start of a new story” is that the disconnect between the Cosmic and the Earthbound directions of the MCU will seem more pronounced after Avengers 4.