Radio Rework - Frequencies
I believe instead of worrying about Faction Radios and antennae, let the beacon do the work of knowing who a ship belongs to, like a license plate. Instead, allow Radios to operate on frequencies like they do in real life. Players should be able to surf frequencies and voice chat with other broadcasts in range, no matter who it belongs to.
For security, allow radio encryption? A block that allows encryption and another that attempts to break it would be a pretty fun sort of espionage mechanic, or a cool way to take control of enemy craft.