Hee! I can totally picture Steve and Bucky being stoically quiet during their kids' meets while their daemons hop up and down in frustration when they think the refs are making bad calls.

Ha! Yep. Also Steve cheering in a supportive, but not over the top fashion, while Issie bounces from bleacher step to bleacher step.

I can already hear Steve making 'vroom vroom!' noises whenever JJ pushes his bike forward.

Eee! Yes! And patiently walking his bike along as JJ inches down the street.

JJ: I go very fast!
Steve: I know, buddy, you better watch out, you don't want to get a ticket. *motorcycle noises*

I can also picture Steve grabbing the handle on the back and running to push JJ along at super soldier speeds.

Nora: Steve Rogers, you run like a normal person right now! That is dangerous!
JJ and Steve: Awww...