Obviously, the ALL group is helpful, but there are some tracks (e.g. Reverb Aux, Mix-Level Aux, Instrument-Grouping Auxes, etc.) which I want to always keep at 0 dB.
It'd be great if we had a (completely optional) choice to modify the ALL group, flagging specific tracks it *shouldn't* control. If this option isn't enabled, the functionality of this group should remain completely as it is today - don't want to disrupt anyone who's not into this idea.
The group would then continue to update everything except the excluded tracks as usual (including any newly added tracks - that's why this would be much better than making your own custom 'All Instruments' group).
Attached is a mockup of a possible implementation for this.