As much as I would want Sam Wilson to finally be respected and treated seriously by every person in the MCU it’s pretty obvious that there are people who won’t like him being the new Captain. Showing that he’s still mistreated despite his role would be probably more realistic than just assuming everyone accepted him without hasitation (especially after the show revolving around his doubts about this very problem).
But if there will be scenes in future movies or shows where Sam is dismissed by people around him I want Bucky to be very, very obnoxious about his support for Sam. Every time someone assumes he’s the one in charge (like Walker did) he just asks Sam for his opinions and directions - even if he already knew the plan. Every time someone insinuates that Sam’s not doing the job right he just asks something like: “excuse me, were you personally picked by Steve Rogers to take the shield...? ...yeah, that’s what I thought”. Or he’d just casually mention Sam’s accomplishments, because Sam would never brag about them himself, but Bucky wants people to know how good he is at what he’s doing.
Basically, I want Bucky to shower Sam with additional love and support every time a person as much as looks weirdly in his direction. And I don’t mean to imply that Sam wouldn’t be able to deal with unpleasant people just by himself, because he absolutely would, but it’d be just so much easier for him to be a good Captain if someone had his back 24/7 and was very open about it.
(Also, Sam is probably way too polite to say “fuck off” to random, rude citizens, so Bucky can do that for him without consequences. One of them has public image to keep, the other not so much and they can take advantage of that. “Captain America flipped me off” would become a headline nationwide. “Captain America’s boyfriend flipped me off” is way less catchy and scandalous.)
