Re: Marvel Now/ReEvolution Ongoing Discussion (Spoilers)
From what I've read online it sounds like the whole idea behind Mighty Avengers is that these characters all come together when the bigger Avengers characters are off dealing with something during Infinity. So I think the purposefully picked lesser known or minor character.
They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance. - Terry Pratchett, Equal Rites