It would be a great feature to be able to use one push-to-talk key and have the application know which wingman to use, either intuitively know that a request to land goes to the appropriate wingman, or using the callsign, it would be directed to the proper wingman.
I use push to talk, while push to mute is used to silence my voice in my chat. I know a lot of folks use this method with VA.
So far, it's brilliant!