I would love it if, in some of the more obscure windows, there were instructional balloons to help out. For instance, if you go to Styles/General/Page, there are some controls for things that we all recognize because we read music, but even experienced musicians may not know these names for them, eg: Staff distance, Grand staff distance, Min. system distance, Max. system distance. What do these things mean?
Of course one can look them up, and I have; but the differences somehow don't stick in my mind.
If, when you hovered over these, some kind of explanation of what they do popped up, it would be incredibly helpful. I have been using these controls for a while now, but I still forget which one moves which part.