7) Avengers Vs. X-Men
From the Comics: The Phoenix Force is returning to Earth, and its target is supposedly Hope, the so-called “Mutant Messiah,” the first mutant born after the decimation of the global mutant population. Hope is protected by the X-Men on their island sanctuary, but the Avengers aren’t prepared to entrust the fate of the world to the X-Men. It results in a fight between the two teams, which goes to a whole new level when the Phoenix arrives and possesses several key X-Men.
Connection to the Film Series: True, X-Men: The Last Stand did a “version” of the Dark Phoenix storyline, and while there was nothing to say that Jean Grey’s turn to the dark side was because she was possessed by a powerful entity from space, there’s also nothing to say that she wasn’t possessed by a powerful entity from space either. Obviously, many of the pertinent characters in the story – Cyclops, Professor X, Captain America, Iron Man, Wolverine, Spider-Man, Storm, Thor, Beast, Luke Cage, Black Widow and Magneto – have all been introduced on screen (or soon will be).
Adaptation: If Marvel and Sony can figure out a way to work together to bring Spider-Man into the Marvel Cinematic Universe, perhaps this is the way to bring the X-Men into the fold. The comic book miniseries is steeped in years and years of mythology, so the core story would have to be simplified. Still, the MCU will soon embrace questions concerning the control and regulation of super-powers in Captain America: Civil War. Such an idea, being targeted and tagged for having abilities, has been a core storyline and theme amongst X-Men comics for years. The revelation of people born with powers that may or may not be controllable will be a problem being dealt with by the Agents of S.H.I.E.L.D. through the Inhumans this season, but why not just make them mutants and save the stress?