Relatively simple* suggestion, I think.
A low polling (ie. not necessarily accurate to the second - maybe minute? 5 minutes?) ping of the player’s current location in-game to be sent (if they enable it) to any and all connected platforms.
So on Steam, it’ll say that Mad_Man_Moon is playing Boundless, but the subtitle will be “… on Sochaltin I” or something.
Similarly, a small part of one’s forum profile/mini-profile will show if the player is online and where.
I don’t know or care how discord works, but I’m sure that folks might mention something about that technically disconnected platform otherwise … anyway, yeah … that’s all.
As per usual, muting/unfollowing/ignoring thread, as it’s just a suggestion, and I really don’t need to discuss it.
*as in, the premise