I'm fairly certain this has been brought up before (and it may be in the works for all I know), but this feature is very important to me.
Bracket text! Identical to "Instrument Name" text, except centered on the bracket.
Examples (made in Finale- sue me):
Regular Bracket text: "Bb Trumpets"
Square Bracket text: "Bb Clarinets"
I feel like this should be a simple addition, and it's really only one of two "flaws" that is keeping me from making the switch from Finale to MuseScore permanently.
Thanks for reading my suggestion!