One thing I have noticed with my MCU2 upgrade is that the audio now has speed compensated volume - in that when you slow down and stop at traffic lights, the audio volume decreases and then increases again when you pull away
I certainly never witnessed this behaviour with the MCU1 - and intriguingly, I cannot find a setting or control for this
As for FM radio, or AM for that matter - no, I certainly don’t miss the local 93.9 L-ZEP stations, playing all the latest and greatest from Creedence, Poison, Rush and of course Led Zeppelin...
I have placed a battery operated portable in the glove box for emergencies