Mixed reviews for Mackie's Captain America in Brave New World could lead Marvel to kill off the character in future Avengers films. The disappointing response to the movie challenges Marvel's long-term plans for the MCU and the role of Captain America.

Brave New World raises a major question about the MCU: which superheroes are even left to help Sam Wilson defend Earth?

Despite building up some anticipation for what’s to come, “Captain America: Brave New World’s” post-credits scene plays its cards close to the vest. The sole scene, which arrives after the full credits roll, sees Wilson visit Samuel Sterns (Tim Blake Nelson) at the Raft, a maximum-security prison for superpowered beings.