Mute Slot modes

I think next to the Solo and Mute modes, there should also exist 2 different ways of interpreting Slot mutes in PMatrix… I would love to be able to have repeated patterns with some slots muted to act only as a ‘OFF’ instead of a ‘MUTE’ mode. On the other side it should probably then be a Song property/preference instead of a global one because it could change playback of old songs entirely.