i just thought of something that can be nice for the game, allows player to play music with instrument (like in the lord of the ring online) indeed they can put limitation of where people can play music, but the systeme is not that hard to create and if a game like the lord of the ring onlince can do it, i don't see why FF14 can't.
example: https://www.youtube.com/watch?v=henpPIyaeiw
this systeme allows multiple person to play music together and in rythm. can be amazing and will give some fun tool for roliste while adding some possibility and nice event to the world. let's bring the music to eorzea!