Not so sure about sudden changes, but being able to set a start and end point would work quite well (think - what deltamax does for tempo, you should be able to do to AR)
e.g. in the timing panel, if you set AR7 at 0ms and AR9 at 10000ms, it should be AR8 at 5000ms, AR8.5 at 7500ms, etc.
Oh, I think I made this more confusing. Oops.
e.g. in the timing panel, if you set AR7 at 0ms and AR9 at 10000ms, it should be AR8 at 5000ms, AR8.5 at 7500ms, etc.
Oh, I think I made this more confusing. Oops.