Abandoned school, Germany.
“When I see you, the World stops. It stops and all that exists for me is you and my eyes staring at you. There’s nothing else. No noise, no other people, no thoughts or worries, no yesterday, no tomorrow. The World just stops, and it is a beautiful place, and there is only you.”
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.
tldr; the ladies save the world instead