According to a report by Comicbook.com, rumors are swirling about the future of the Marvel Cinematic Universe, and how the massive franchise plans to cope with the vacuum of star power should Chris Evans, Robert Downey Jr, or Chris Hemsworth decide to exit the franchise. A new report put out by That Hashtag Show indicates that after Avengers 4, which might or might not be titled Annihilation, the MCU could be taking on the Dark Avengers.