10 Best Avengers 4 Fan Theories
9. Vision's Return
Vision was at the epicenter of a whole lot of the conflict in Infinity War.
Thanos' minions spent a huge chunk of the runtime attempting to rip the mind stone from his forehead, which lead to the Avengers spending a lot of time attempting to figure out how to separate the two. In the film's final moments though, it was proven to be all for naught, as Thanos cherry-picked the stone right out of his head, killing him.
But there may be a silver lining. As stated by Bruce Banner himself, Vision is much more than just the mind stone. He's an amalgamation of Ultron, Tony Stark, Bruce Banner, Jarvis, and the stone. The team surmises that it's more than possible for Vision to live on without the stone, so long as it is safely removed.
Before things went colossally sideways, Shuri spent the entire third act attempting to remove the stone herself. Though she didn't succeed, she's the smartest mind in the Marvel Cinematic Universe and has the entirety of Wakandan technology at her disposal. Whether she was able to download part of Vision's consciousness into the lab or has another way of rebooting his system, count on Shuri being able to bring at least one fallen hero back to join the fight.