I wanted to do this when I first got mine an was told not possible. I asked again at NAMM this January and was given a very long "no". Seems simple enough to us, but there`s bound to be some reason it`s not happening.
Sounds like there haven't been enough requests for it. Any others wishing for this? ET is pretty good about delivering if there is enough votes behind it. If not, we may just be in the minority. Either way, this is one hell of a pedal.
It seems simple enough to allow CC control over the master volume parameter, and I`ve seen lots of folks ask about it on here so a maybe is a great sign!