Well, here is the thing. Part of the interesting thing about The Avengers is it's supposed to be made up of characters we are already familiar with in their own universes with their own stories, right? Obviously they would have to shoehorn in several to complete the avengers team, and that isn't feasible, so they just did it for hawkeye. However, it still seems like there is a bit more room here, so Wat Do? Hey MARVEL, you know what a good solution to this is? Use Wolverine. I don't pay attention to the comic scene much, but I heard somewhere he was part of the avengers once, soooooo.... why not? I am not the biggest fan of wolverine, but it would be nice to see more attention paid to the x-men franchise in this day and age, and a good reminder to let people know that it takes place in the same universe. They aren't even giving that franchise any love with the Avengers cartoon for crying out loud, but they give constant nods to The Fantastic Bore.