I’d like to suggest the idea of an “anonymous/streamer mode” feature that would give players a choice to hide their profile and/or other player’s profiles within their matches.
This could be either hidden from themselves and/or from other players too.
To avoid stream sniping among many other types of harassment and for personal choice.
The placeholder usernames could simply be “enemy X” and “friendly X” with X representing the number of their slot in the match. And their rank border could simply be removed. Profile picture be set to deafult.