With all the MCU's crazy success, it's easy to forget that - for the most part - they had to make mountains out of molehills.
Their most famous characters - from Spider-Man and Daredevil to the X-Men and the Fantastic Four - were tied up at other studios, leaving them to make stars out of characters that were relatively unknown outside of the comic book fandom. They did so to great effect, turning Captain America, Iron Man, Black Panther, and the Guardians of the Galaxy (who?!) into some of the most recognizable faces in all of pop culture.
Things aren't looking to let up anytime soon. Not only have they proven their ability to make icons out of unknowns, but they've more or less acquired the rights to all of their most popular characters. With Disney's acquisition of Fox, Marvel regained control over the X-Men, the Fantastic Four, and all related characters. What's more, with the unprecedented shared custody deal between Sony and Marvel for the rights to Spider-Man, the Webhead is also able to plan in the play in the sandbox with everyone else.
More heroes are to come. After all, did anyone expect the MCU to just stop in its tracks with he departure of Iron Man and Captain America? Of course not! And why would they? They've got a wellspring of great characters, and they'd be remiss not to use them. There are so many faces we still haven't seen. So, who can we expect?