I think it would be nice if one could export a project to an OpenMPT format (https://wiki.openmpt.org/Manual:_Module_formats), then a customer of a producer can mess with the output themselves if they wanted to (faster, slower, pitch change, muting of individual channels). The resulting file would also be much smaller than an MP3 or FLAC file due to the nature of the file being "sheet music + instruments". The computer just plays the given instruments according to the "Sheet music" it is given.