Originally Posted by InternetPeople
But does it advance the story? If not, don't do it. There plenty of other more important stuff to spend time on.
Thinking stuff but not acting on it doesn't work on film very well. You don't get thought bubbles on film. Besides, the audience already knows Cap is out of place. There really is no point in spending more time on it. It was mentioned at the end of the first film and eluded to in the Avengers. You don't need to bash the audience over the head with it.
Unlike you, most people in movie audiences actually care about getting emotionally invested with the main characters. They're not in it to just ride along from Plot Point A to Plot Point B. Plot is meaningless if nobody gives a damn about your characters.
The Man Out of Time is a trope that's absolutely relevant to CATWS. Cap is not only haunted by the unseen ghosts of everyone and everything that has long since died and gone away from his world, but by very real and tangible people, things and events from his past....which is still, to him, his present.