Re: Power man & Iron Fist -- a business perspective
I'd go with a heroes for hire movie...no need for solo. Just merge their two origins. Merge the man who killed Danny Rand's father and the man who framed Luke Cage into one person, and have them encounter each other on their own quests for revenge.
The in #2 the heroes for Hire Concept could come into play.
MCU Rest of Decade prediction:
2015: Avengers: Age of Ultron, Ant-Man
2016: Captain America 3, Doctor Strange
2017: Thor 3, Guardians of the Galaxy 2, Inhumans
2018: Avengers 3, Black Panther, Incredible Hulk 2
2019: Iron Man 4, Doctor Strange 2, Ms. Marvel