Add command to choose scaling based on current layout
Layout/Page Settings do not automatically adjust to number of instruments placed in score. (i.e.: score does not resize to fit all instruments- one must manually adjust size of page with auto-fit).
In the official release of MuseScore 3, I suggest implementing automatic page formatting/sizing to adjust to number of instruments included in score. Users don't know how many inches/cm (or .10's of an inch/cm) they need to adjust a score's size parameters to fit their music. Competitor software has this feature. Auto-Fit would make the process of setting up large scores (i.e.: orchestra composers, large wind ensemble composers, etc.) easy.