Just shows to go ya . It irritates me no end when I CAN'T see the volume control on my display. And I never use the Denon remote but rather a universal remote with the volume control programmed to control the AVR volume.
When I raise or lower the volume I want to see visual confirmation that my command is being accepted and I want to see the level change so that I know where I'm at on the volume scale.
After all, the GUI only appears when you're changing the volume and then disappears within a few seconds; it's not like it's a static display.