>>29441954>I...don't really see how that makes him seem more like an actual team boss?>To be honest, it looks more like a religious get up, something like a bishop or pope would wear. It fits with the whole theme of N being kingIt's character design anon. Visual shorthand to give clues to audience about the personality of a character if it isn't readily apparent.
He dresses himself like a king to show he serves no-one and N is nothing more than a pawn that can be manipulated. It was foreshadowing is the form of his appearance.