I don’t believe Bruno is captain material. He can lead through performances but he is one of the worst players in the league at moaning at his team mates. Particularly like last season, where he was mediocre at best, there’s plenty of examples where he would pass the ball out of play and blame “X” for not being there to get it. He also comes across as an arrogant little gobshite.
Casemiro and Varane have a history of big competitions, finals and trophies though that also doesn’t necessarily make you captain material. I have not watched much of them much for you so I don’t know how they fit into your squad dynamic. Though they would likely do a better job than Bruno who’s only qualification seems to be “best attacking player?”.
From what I have seen, DDG is the best person in the squad for this job. He has been one of the few players to regularly face media scrutiny after poor performances. He has plenty of experience and medals and at one point was the best in the world in his position. You guys might not particularly like the guy but as an opposition fan he has my up most respect for how he carries himself especially in defeat.