Hypixel used to have the command /who. In ranked, this would list the people in your game and what ELO they were. This was pretty useful because you could generally get an idea of how good someone was based on how much rating they had. They removed this though since it got a lot of top 10 players targeted. But with most IGNs you could either do /stats (name) in a lobby to see their rating or go to the website. It would be pretty useful to have it just show up in game again, and idk if it would be possible but maybe there could be something like loading all the players names into the stats website and putting out their rating or something. It would be pretty cool just to have that option.