I have successfully compiled the source code in Qt and looking through issues. Perhaps like many developers I am also a musician and used Musescore regularly. One of my first issues tried not really listed was to add to the templates options in the New File wizard. eg. wind quintet/brass quintet/concert band etc. I can see from the code these are existing mscx, on my Ubuntu it shows in usr/local/share/ms-score4.0/templates. I added one in 03-Chamber_Music for 'Recorder Quartet' (Descant/Treble/Tenor/Bass recorder, being a teacher regularly getting such groups I arrange for). How easy is it to add such files to the download process so they are there from the off?
Another process I have found cumbersome is the extracting parts so I saw there was a live issue on that.