Suggest an option to easily play one or only certain instruments
This is a suggestion I made a couple of years ago, but maybe there's a new sheriff in town, so ....
Currently you can select a starting note and hit spacebar, and MuseScore will play the score from that point. It would be helpful to me and presumably others to have an option that allows you to select just one instrument or section and play from the selected point. Accomplishing that in the current version is extremely cumbersome.
What I suggest is allowing the user to click on a particular instrument's note and hit some key other than spacebar - Enter or F10 or Alt-spacebar or whatever seems appropriate and doesn't conflict with an existing key option - and have MuseScore play that instrument only from that point.
An extension of that idea would be to allow the user to select multiple instruments - either by selecting one instrument, holding down the Shift key, and clicking above or below on the same note for another instrument to select all the instruments in between ....
or by clicking on one instrument's note, holding down the Ctrl key, and one by one selecting the other instruments you want to hear together, even if they're not adjacent.
Sometimes it's hard to hear clearly one instrument among many, or maybe you want to hear just the harmony between two or three instruments. Or just one section at a time.
Another suggestion is to have a mechanism to find out what the tempo is at any point. Select a note or measure, hit "T" (or whatever), and have a popup box tell you what the tempo is - andante or quarter note = 80 or whatever. In a long piece you may have forgotten what the current tempo is and it's a bother to scroll back to find the last tempo spec. Since Musescore obviously retains that information, since you can play a score from whatever measure is selected, it shouldn't be difficult to program.