In lobbies where there are many avatars or the world is large and players spread out it can be difficult to locate who's join sound effect or other global audio is blowing out everyone's ears.
I propose a UI element on the menu which appears like a notification at the top of the menu to indicate which avatar in the world is playing global audio.
The notification should only exist as long as the audio is playing, but may also be more user friendly if it lasts a few seconds longer. When the button is clicked, it should direct you to the user menu as if you had clicked on the user in-world. The user can then hide the avatar or mute the user at their discretion, or instance moderators can kick an annoying user.