Please include a polarity/phase switch on sends (the way it is possible in Reaper). You already got a small pan control which is great. I'm just missing a small polarity/phase switch next to it. It would not take up much screen real estate but would tremendously increase functionality.
Here a screenshot taken of a video by Dan Worrall (video below).
Here you can see it in action at minute 1:42 in a video by Dan Worrall