A quick thought on this topic would be the following about the surface.
1) Some means to adjust the led brightness of the channel strip independant of the brightness of the virtual write-on strip above the fader. Under low lighting conditions, once you dim the leds on the channel strip so they are not blinding you, the colors of the virtual strips are gone.
2) Possibly an additional display same type as the virtual write-on strip above the channel strip which displays the channel name of the selected channel in a large font.
tspad1960