Half solo/Half mute

I think it would be great to have a reduce of the other channels rather than complete off.
When you press solo the other channels are dim:ed instead. And when you mute the channel is reduced.
This should be a mode of solo/mute so that controllers still works. And there is of cause a need for a knob
to control the dim separately so solo can dim on one level and mute on a other,

Listen Bus.
Available since decades in Cubase.
Please read manual or online help.

Listen mode is not available on control surfaces, so solo knob mapping is one way. And you can not toggle solo-listen-none and it does not have the mute function either. Mapping Listen to Shift-SOLO on for example would be great. Unfortunately it was decades a go Cubase updated it control surface capabilities. So it need to mapped to existing parts.