It would be really useful to be able to solo or mute linked tracks (perhaps with a shortcut, like Cmd + S). Music Stems are usually linked, so they don't go out of sync, and sometimes you need to listen just to the music to check an edit, finetune, etc. If you have 10 stems, soloing each one of them each time you want to check something takes a lot of time. The workaround is to mute the voice tracks, but again we are talking about multiple clicks if you have more than one voice vs one command that you usually are enabling / disabling a lot to review.