Hi Peter,
I want to start by saying, I have used every automation/lyric display/backing track software out there and none of them can even come close to the stability and features available in the ST3 architecture. My band and I use the software during practices, rehearsals, and live for a number of the available functions. You've done a great job!
One feature that I believe could be really useful would be the ability to jump to a previous audio region using a function that allows you to back up to previous audio regions without having to go through each remaining and previously played region when utilizing a midi foot controller.
Our band creates our own backing tracks and loops as well as using some pre-fabricated tracks from a number of sources. The ability to jump from one section of the song to another is a great feature we frequently utilize, but while playing it requires a lot of "toe tapping" to get back to that last "solo region" or "add a verse" on the fly as we often do.
I love the app and I love the freedom and versatility it has brought to our sets both for learning new material, and working the stage during live performance! Thanks a ton!