It woulb be very cool to have radio communication with channels and stuff. So for example you want to dock at a station, so you send a request, they send you the radio channel and you speak to them about your landing bay and stuff like that. Or just with friends to have a better experience. It would be a nice way to be able to Role Play ^^
In game Communication in generell. Maybe you know the Arma 3 role play scene. Communication like this ( without teamspeak and just ingame) would be very nice