Two MCU heroes are already the best candidates for a total reinvention if the MCU goes through a reboot in Avengers: Secret Wars. Over the past seventeen years, the MCU has grown into a cinematic behemoth, but its massive scale has also led to uneven character focus. While some heroes have completed epic, decade-long arcs, others are only just beginning their journeys. As a result, characters like the Fantastic Four and the X-Men aren't able to meet MCU legends like Tony Stark and Steve Rogers.