MM, I have a problem with you (don't take that personnaly, even if it seems to be a personnal attack 😎)
Everytime I ask for something (and I'm not the only one), you reply with something like "why would one want to do such a stupid thing? It's not a user case imagined by B&O, so you're not a good user. The B&O product is well-thought, you are the wrong guy. Therefore you should die!"
Ok, you're not so extreme... 👍
But when I was worried about the fact that new beolabs had digital inputs and there is no digital output on the Moment, you asked "why on earth would you want a digital output when you have WiSA ?"
And now that I'm wondering if there is a way to fix output volume on the Moment, you ask why would I need to do such a stupid thing on such a superb volume-controlled device (again, this is a small reinterpretation of your answer... 🙂)
So, to answer : it would be helpful for me to have only one volume control, because currently my BS5 Encore is "linked" to a Beovision 8 40 which I still love (so I don't want to replace it) with a Beolink converter, so when I turn volume up on the Beo4, the volume turns up on BV AND on BS simultaneously, which is not optimal, as like you say, it's better to fix the BS (source) sound level to approx. 80%. But I also understant that having the tablet on hands without sound control could be frustrating some times... But this would be only a temporary solution (for some years actually), as I will certainly replace the B8 one day in the future 😕