I would like an autolevel option for the audio. I find myself constantly adjusting the level between transmissions. This would not be needed if folks would watch their meter and adjust the mic level. Alas, too many don't.
Yes, AVC would be very nice. I googled the issue and found software that looks like it does the job but it requires you have a soundcard mixer which has audio level display. Obviously it uses this display to control volume. If there is a level display (led indicator type display) on your software mixer then it will work for you.