1. Black Panther
A Black Panther movie is definitely going to happen at some point. It's inevitable. For a really long time we've been receiving some news about possible casting calls, comments by Kevin Feige regarding the movie, and while a movie based around his character was cast aside favoring The Guardians of the Galaxy that still doesn't mean that his time in the sun won't be done. He is a brilliant character with a story that is one of the coolest ones ever in the entire Marvel Universe, and yet they don't appear to have much interest in introducing him to the MCU. He must be introduced in Phase 3. While we don't know right now who might play the role, or what the storyline might be, or even how he will be introduced to the rest of The Avengers, we know that his role in The Avengers 3 will be a very important one. He is a character strong enough to stand with Captain America, he is ruling a kingdom so his interest for defending the earth along the rest of the team is his commitment with his own people, and most importantly, he is one of the biggest badasses in the Marvel Universe. He doesn't fear fighting an opponent that is bigger and stronger than him. If he gets his movie on Phase 3, I'm really sure it's going to be one of the best movies Marvel will do at the moment.