The headphone volume knob on the back isn’t very practical or easy to reach. For headphone-only use, it would be great to have an option to reassign the knobs that currently control the master output level to instead control the headphone output level.
based on my recent use case I’d also add - it would be helpful if Level knob would control amount of NC effects signal into headphones, when using NC as an audio interface. It would make it more practical when using sound of NC for direct monitoring and balancing the levels with the “backing“ tracks from DAW or media player and then using headphone out to control overal volume.