Originally Posted by herolee10
I think having Hawkeye in the film would be overdoing it. They already have Falcon and the Winter Soldier in this film, let alone Black Widow, and we'll most likely be getting Sharon Carter as well. If we add Hawkeye to it, then this would really feel like what Iron Man 2 was and just a film that's meant to rush people to the next Avengers film.
Black Widow has a pretty long history as a Captain America supporting character. She's been in probably 20-30 issues over the past 10 years. I think that is the reason they'll use Black Widow, and not just to go "Hey, Avengers cameo!"
Hawkeye's interaction with Cap has always been in Avengers comics. I could do without either in the movie, but I can at least justify Black Widow's based on the source material.