I think the number of softkeys is very high, which I think is very good. However, the functions available to choose from could generally be more extensive. There are enough useful ideas.
I would really like the option of being able to switch a window for setting options such as compressor, gate, EQ, etc. from touchscreen A to touchscreen B using a softkey.
+1 to the OP’s suggestion of having the GUI close any popups. Even better would be the ability to program it for either the left screen, the right screen, or both screens. I could see times when you don’t want to close popups on both screens.