Anthony Mackie playing Falcon in Captain America: The Winter Soldier nearly stole the show. Here's a solid, average guy who will help out whenever he's needed. Plus, Anthony Mackie has said some nice things about Wonder Woman which have garnered him a special place in my heart.
As a regular character on the ongoing Avengers Assemble cartoon, he definitely deserves a chance at a video game appearance. Plus, the current game line-up is a little... white. It would be great to have more people of color represented, and flying characters are just plain cool.