Bard and Wanderer's Minuet use it

[Sylve]

It's not though.
I don't see how going from being a job that can attack very quickly using several quick attacks in succession to being a job that can only attack once in 1.5 seconds is not a big change

Attacking quickly? uhhh If by that you mean Weaponskill+Auto+Bloodletter ... And for most of the time it was just HS+AA.
Sometimes you got that lucky double proc.
In a 2.5 second period, you get exactly 1 weaponskill and 1 off global shot. Trying to stick two in takes longer than 2.5 seconds and slows down your stronger Weaponskills.
So no, In that same 2.5 second period, you are STILL only doing 2 attacks.