It’s quite an interesting time to be a Marvel fan as there has never been so much uncertainty about the future of the Marvel Cinematic Universe.
Marvel has been working to build Kang up as the next Thanos with Jonathan Majors poised to play a major role in the MCU’s current phase as Marvel builds to Avengers: The Kang Dynasty. However, with Majors out, the future of the MCU is uncertain.
We know the Avengers will still assemble for a pair of new movies, but the source of what will asssemble the Avengers next is a very big mystery at the moment. The Kang Dynasty is already being referred to as Avengers 5 at this point and it's unclear how long Marvel will make us wait to know what the plan will be for the Avengers next adventure on the big screen.
What we do know is that when the time finally comes for the Avengers to assemble again, regardless of the threat that brings them together. There are more than a few newly introduced Marvel Cinematic Universe characters who better be included in the new Avengers lineup.