I would say that Arrow for BRD is almost as potent as Balance.

While you wont get the damage to any of your oGCD skills, what you will get is a change in the # of Heavy Shots you can cast in a single target rotation. This will equate to a higher chance of getting Straighter Shot procs.

Getting extra SS procs allows you to replace a Straighter Shot with a Heavy Shot (+10 Potency) and a Heavy Shot with a SS Proc 150 Potency VS 140 Potency * Crit Multiplier.
So not only does get you extra damage, but it also greatly increases your average Potency/s for the duration.

AOE is pretty nice too for quickly multi-dotting + AOE Spam.