Sometimes I want to play back only a few widely separated voices. But then I want everything. So I have to unselect S in a voice at the top of the score, scroll way down and unclick another, scroll down again and again and this all takes up a lot of time. When the instruments are listed on the left side of the window, I wish there were a couple of buttons: one to deselect everything that was a Solo and one to deselect everything was was Muted. It would save a lot of time scrolling up and down and sometimes missing something. In a score with 5 staves this isn't a problem, but an orchestra score with 30 staves it sure becomes one.