Invite to server call / ring users in server

Instead of having to message your friends when you want them to join a server call, why not have a button after you right click a user to ring them to join the same server call as you. This would be server locked so you can't ring people who aren't in the same server as the call you are in, and it could also be locked behind server permissions so only certain roles can have access to this feature to avoid spamming. Would also be useful in tournament settings where you have to call and admin / judge to your call, instead of mentioning them you could just ring them directly - to this affect you could also ring a certain role eg. admin, mods etc.