He doesn't really have all that interesting of an angle compared to Steve, but giving his background as both a black man and the leader of a veteran support group, they should have had him going around using his influence as Cap to tackle systemic issues (something we never see Steve do). A black Captain America should be on some MLK shit.
It's kinda weird how they halfway committed to this idea in FATWS and just never went anywhere with it.
I have nothing else to say