Erik Pancakes said:
I don't think it's perfect, but I do think it might be too episodic to turn it into feature-length stories. The post-Winter Soldier arc would probably be the easiest.
This is my thought as well. The whole Hydra arc could make for a great self-contained film, though some of the build-up from the first half of the season would be missing (why Coulson is alive, WHO is his team now? Etc.)