When it began with 2008's Iron Man, the Marvel Cinematic Universe soon skyrocketed into one of the most successful Hollywood endeavors of all time. The franchise has raked in over $30 billion at the box office and has established itself as a household name of cinema. However, recent years have seen discussion of audience fatigue crop up, especially with the franchise's use of a signature, but predictable, formula. Moving away from this could breathe new life into the franchise.
Source:https://www.cbr.com/mcu-avoid-superhero-fatigue/