There was a jit.si post on here where someone made a 2d map. If you were standing close to them on the map you heard the if voice. Further away people were ignored.
If I remember right there was an app from the early 2000s that did something kind of like this. It would be cool to combine the 2D map with a speech-to-text word cloud over clusters of people so you could see if you wanted to join another conversation.
I really prefer it to discord/whatever other voice client because you can also do stuff like hierarchical broadcasting, a parent channel can broadcast to children without children broadcasting back.
There are a few Minecraft mods that implement this kind of behavior, and I could swear I saw it baked into a shooter game somewhere but I can't remember which one.
