I think all of these really fit!
Brilliant Idea, Awesome and Yet So Funny
Two of my favorite things put together like this- you are a genius XD
(Btw, I do consider Nick Fury part of the Avengers team. Tony Stark, Hawkeye and Black Widow don't have actual superpowers either. Stark is a gadgeteer, while Black Widow and Hawkeye are more like Batman or Daredevil or Catwoman.)
Great idea, good execution.
This is all sorts of awesome btw.
Loki would be Scout.
A very small fire giant.
Also Engineer's face. He's having the best time EVER.