Considering the Movie Avengers as a Whole body, i consider Cap as the "heart" of the team (the driving moral force), Tony as the "mind" (tech savy and futurist, he is always on the lookout for dangers not yet revealed), Thor as the "spine" (able to stand against powerful enemies without bending), Hulk as the "arm" (direct violent response, overwhelming show of force) and Hawk and the Widow as the "eyes" (the lookout for the human side of things). Do you think it works conceptually?