Endgame served as a definitive ending to many past storylines. Understandable, seeing as it acted as the end of a 22-movie saga. However, it was not the end of the MCU, with the fourth Avengers presenting some new beginnings, giving audiences a hint of what’s to come in the future. Maybe the most important introduction was Steve Rogers passing of the shield to his friend Sam Wilson, the new Captain America. This is something that’s been talked about for many, many years among fans.