With my 990, I often want to know what the vol level is. Only way to tell is to rotate the vol control. Even slightly I often find I change the level setting by one notch.

Suggestion: Make the vol control knob capacitive sensitive so that simply touching it will activate the display showing the current level setting. OR

Display the vol setting at all times, at a low brightness setting. When vol knob is rotated, the screen will resume normal display function.