Then there's the question of realism. Most planes (until modern era jets) use two to three radio sets (VHF receiver/transmitter, HF receiver/transmitter, and Nav receiver) and that's it. Everything is "local". In other words, you are always range limited by your radio power and altitude. In addition, you either transmitted or you received (i.e. simplex comms), but not both at the same time. We're already stretching things to have duplex comms (simultaneous send/receive), an intercontinental squad radio, and four additional teletypes.
Adding more radios seems counter to what we're trying to achieve, particularly if there are external options like Mumble, Teamspeak and Discord for those that want more communication options.
