Bard and Machinist should have a limit break indicator.
I think it's unfair that black mages and summoners have an aoe limit break indicator but we don't. We should be able to see the exact trajectory and range of the limit before using it. We shouldn't have to guess, when they changed that for mages long ago.
As it stands, I'm afraid to use mine because if the angle I'm facing is slightly off, it's going to fire off in the wrong direction and completely whiff. It's happened multiple times. It's very sensitive about the exact angle you're facing.