For my part, I'm happy to hear that BRD won't require constant gear swapping between weapon and instrument. It might be interesting to let them equip an instrument to their "offhand" slot, which is shown instead of their weapon when performing.

But then, for my part, I'm also happy to simply know that there will no longer be ammo for ARC/BRD. I will be strongly considering that class whenever I can get my hands on it.