I wish we could use the radio, to contact friendly vessels in the neighbourhood.
It shouldn't be to hard, to make a script that allows this...the limited radio-calls we can perform right now (send a contact- or status-report) show that it is possible.
All that would be needed, is a way to select a channel (BdU, nearest friendly warship, nearest friendly ship, nearest friendly Uboat, etc.), and a standard set of message-types.
But I guess this would be up to the modders, as I read that the SH3-devteam no longer excists (working elsewhere).
And off course, it would also be nice if the radio-antenna actually would be deployed, when about to transmit...
It's a ring-shaped antenna, which retracts into a box on the inside of the right conning-tower side.