Discord Phantom Mode (voice chat)

So i was thinking about adding a way to become a "Phantom / Ghost " in a discord server if you got the permission (mostly for admins) what would it do ? its quite simple.

It would make it so when you join a voice chat in a discord server with the Phantom / Ghost mode activated, you would be totally invisible in this voice chat like people in the voice chat you joined wouldn't be able to hear or see you in the voice chat you joined but YOU would be able to hear them !

It would be quite helpful in alot of case.