I feel like it would be a cool feature, much like how discord shows it, to show when a member is playing Minecaft and whether or not they are doing single player or multiplayer. It would be cool so see who is actually playing in case you are looking for people to play with. It would just have to be maybe a small icon next to their name in chat with like a Minecraft grass block or something like that to signify they are in game. This feature would probably only work for those who have their Minecraft accounts hooked up to their PMC accounts.