Peggy is the one to get stuck in ice in and survive the century. Pepper doesn’t get rid of Extremis and becomes Rescue. Bruce Banner stays under the radar leaving Betty as the authority in gamma radiation. Jane retains some of the Aether’s powers. Thor is busy ruling Asgard, therefore Sif is the one tasked to retrieve the Tesseract. Director Fury rounds them all up along with Black Widow for his Avengers Initiative and, Barton being compromised, Maria Hill steps up as the marksman of the team.
The idea was to bring together a group of remarkable people to see if they could become something more. To see if they could work together when we needed them to, to fight the battles that we never could.