If you're wondering why you haven't heard much of Marvel Studios' plans for Phase Four, president Kevin Feige has made it clear the studios is keeping everything close to the chest until Phase Three officially wraps with Avengers 4. We do know a couple of things, however; the landscape of the Marvel Cinematic Universe will be different, and we'll be mourning the loss of characters we've come to love over the last 10 years. However, with the Disney and Fox merger in the works, there's a very good chance we'll be welcoming some new ones as well.
Which brings us to virtually every Marvel fan's dream of having the X-Men and Fantastic Four finally rubbing shoulders with the Avengers and Guardians of the Galaxy. Despite Feige indicating that the incorporation of the Fox characters is still a ways off, you can't help but feel that he's simply waiting for the right moment, and more so, the right way to integrate these additional faces into the MCU.
And with that in mind, it's a virtual no-brainer; the entry point Feige and company should be looking at is a solo movie focusing on Elizabeth Olsen's Scarlet Witch.
In recent interviews, Olsen expressed trepidation about such a venture, admitting it wasn't something she was "pushing" for. But despite her initial tentativeness, she later clarified that she would love a crack at a solo flick.
Even more interestingly is that in walking back her previous apprehension, she also mentioned the perfect event that would enable her character to bring Fox's mutants into the MCU: House of M, the popular comic event from writer Brian Michael Bendis and artist Olivier Coipel.