Fold the piano roll at note level (notes used), also ability to select scale, example (E major) and fold it at scale level… makes it nice and visual, possibility of entering out of key note disappears. I know cubase can do this now using chord track, putting in a blank chord and defining a user scale. But you still have note lanes you are not working with, in other words it’s not Zen. So please cubase developers, for the love of GOD, of music, add this in … 
I promise I will upgrade to cubase 11 pro from 10.5…