It would be nice for the next version of musecore if the user would be allowed to repeat a section by however many times they desire. Perhaps an extra right-end side of the measure repeat dots could be selected that looks identical except it gives the number of repeats the user wants. The user clicks on it, drags it to the measure they want the repeat dots to be, and a GUI box comes up that asks for the number of times the section is to be repeated. Afterwards, put a "X4" over the repeat dots above the measure if the user wants it to be repeated 4 times, or whatever number they enter so there is a visual connection and it's obvious to other musicians.
Right now it's annoying if you are using the program for playback and writing for contemporary styles of music like metal where you write a riff that lasts for multiple bars where you want it to repeat, say, 8 times, you have to copy and paste it multiple times to get the playback to sound the song out how you want. Having an option like this could make things more compact so I get the benefits of the sheet music notation, and also annoy me less.