It's canon Steve likes to work his way down family trees. When he gets to the future, he'll replace Peggy with Sharon and Howard with Tony. Then Bucky with Rick Jones. Then he'll try to recruit the new Human Torch to the team. Then he'll try and persuade Thor to dye his hair black and wear green panties.

Then they'll get him some counselling, like they should have done when they first defrosted him.