Is there any way to do this per playlist?
For example, I could have one playlist for practicing, which includes all tracks unmuted, then another for playing live that only includes the click track and FOH.
Or even a quicker way to mute globally (rather than going into settings/audio routing/track X output/disabled)?
A perfect place would be in the multitrack setup area shown by the OP...right above the "Track Mutes", add a "Global Mutes" section.