I find the view of the lines in the compressor for ratio very unusual. I first wished me an in/out X-Y view (as we are used to), but I understand if it doesn’t quite fit in the view and would also change too much.
But it would be very helpful if the ratio value would be displayed during adjusting. So you have some idea how steep the bend is now.
An indicator could also be very useful where the highest volume point is, simply as another line (here the white horizontal line):