I would like to have a volume override option for when the player switches to TP. I can imagine that while listening to the DSP at -5db, the sudden change to speach would be a bit jarring.

My old Kenwood would allow you to set a TP volume.

I would suggest having a volume item in the TP menu which just bought up the standard volume control but with a title of "Traffic Volume".

I think it also WBNI it ramped back up to DSP or other source at the end of the transmission.

Just my threepenny bits!