Did they need to do that? To concoct such a story and paint Clint Barton in such different colors? Don't know if they had to, but they surely pulled it off.
It must have come quite easy, in fact: they never really went into detail with Hawkeye. As Renner put it in an interview following Age of Ultron, it "felt like Hawkeye was almost introduced as a new character, because he's never really been explored prior with any sort of depth at all".
Hawkeye's collateral story doesn't only give depth to a character we all love "“ I for one know I do "“ but also comes at the right moment.
When they're all in need of an escape, the Avengers are led by Hawkeye to a safe place "“ his very home, where the Barton family lives.
3. Black Widow "“ Hulk romance
Age of Ultron is a game changer in so many ways. The incipient romance between Bruce Banner and Natasha Romanoff is not something I expected.
Sure the Black Widow has a specific set of skills "“ getting under people's skin is one ability we've seen her exerting so many times in Iron Man, The Avengers and Captain America: The Winter Soldier.
The fact agent Romanoff grows on Banner "“ I could have understood that up to a point. But the way their relation is developed exceeded my expectations.
