I'd actually like to hear even distorted and noisy audio-signal typical to AM/FM radios used in many strange enviroments (especially in EW theatre, storm, mountains etc.) - this could be achieved with some dynamic audio filters.
I believe TS3 SDK has a lot to offer and ED should start considering integrating this VOIP tech or any other into their sim and make onboard radio equipment simulated and usable in multiplayer scenarios in realistic way.
High res pics
http://www.patricksaviation.com/uploads/photos/23414.jpg
http://www.patricksaviation.com/uploads/photos/23413.jpg
http://www.patricksaviation.com/uploads/photos/23412.jpg