I advocate an "Export selection" feature in the Files menu.
The idea is that you can highlight select measures in a score and have them export directly, particularly as an audio file. It'd be identical to "Save Selection" and then exporting as an audio file. It gets rid of having to generate another file in the middle of it and streamlines the process.
It would be useful as a quick way to generate small snippets of audio as reference to someone to listen to. Audacity has an "Export selected audio" feature that made me think it would be possible to achieve something similar on Musescore, even though they're two different types of software.