Some tracks have notes way below the staff or above the staff. When viewing those in Staff View along with other tracks, it would be great to be able to spread out the tracks vertically to avoid overlaps and problems with editing notes that are too close to another track. Just like we have a horizontal zoom control, it would be great to have an additional one that moves the tracks apart vertically.  Alternatively, please give the ability to change default track space height in the Layout vi