No surprise here, but I do trust in Affleck to make a good movie. He's not just a fanboy but he also has the acting and directing chops to pull it off, this movie could get the DCEU on track with both critics and audiences.
It's kind of difficult to approach the best marksman in the world when you've got an arrow between your eyes.
I know, right? It's almost like he has developed some survival skills in all those years that he's been part of SHIELD.
Why would he just run off with his tail tucked between his legs when he could watch the Avengers fail? His personality is based on Tony Stark after all, narcism and everything.
Honest question, would you just refuse someone who has proven that they've seen the error of their ways and gone out of their way to risk their own safety to help you save the world? Redemption has always been a recurring theme in comic books. They should really have a plot line in future movies where heroes are being held accountable for their actions.
You do have a point about Quicksilver's death and as far as I know, there were two versions filmed in order to gauge the reactions of test audiences to Pietro's death. He might've been too exhausted or not fast enough to save Hawkeye and the kid in time. The scene where he was grazed by one of the police officers showed that he's still vulnerable when he's running. There's a difference between having a speedster in your movie or a nigh-omnipotent person who could singlehandedly stop any given threat and rid the movie of tension.