An instance where custom instrument names come in handy: opera/MT scores where you want to name the vocal lines by character as opposed to “Soprano” and “Baritone”.
Example here, taken from the first page of Bizet’s Carmen:
Obviously you can rename “Flute” as “Brian” and use that, but then if you want to use an actual Flute in that score you’re scuppered, and if you’ve made the mistake of saving “Brian” as default that’s going to cause problems in any other score that you want to use an actual Flute.
I’ve just realised that if I make a score in the sofware named after the famous Finnish composer and set custom instrument names there, and MusicXML that score over to Dorico, and then in Setup mode edit those instruments and “Save as default” those instruments will appear in the global instrument list.
Can anyone comment on whether this may cause problems anywhere in Dorico? I’m not remotely bothered by playback; only notation.