While Doomsday is coming, the next Avengers movie faces a challenge that the MCU has arguably never tackled before, and an unlikely source may have just solved it quietly. Even before Jonathan Majors’ firing amid legal issues the narrative direction of the Multiverse Saga was struggling to match the power of his performance. Faced with the weight of replacing Thanos as the MCU’s next Avengers-level threat, Kang the Conqueror simply wasn’t the answer.

https://screenrant.com/avengers-doomsday-kang-problem-what-if-captain-carter-theory/