Reasonably sure this one hasn’t come up before:
I have a score with optional trumpet and timpani parts which I have set to show at 75% staff size. This however results in an uneven distribution of the spacing, probably because the Vertical Spacing layout options apply to the space below a staff and are relative to the rastral size. There is no vertical pressure on this system and I have made no manual adjustments to the spacing. Could there be a way to distribute the reduced vertical space evenly on the top and bottom of the smaller staff, or alternatively, to have the layout options always be relative to a 100%-size staff?