For BRD, I feel it as good as it was, when they buffed Farshot I was like "mh... not a big issue but even not needed".
Honestly I wont' see a nerf on the next patch cause of this PvE buff,
maybe I'm wrong but the DoT buff is fine as the Song ones, the true problem is the Blunt arrow, Sidewinder and Empyreal Arrow one :/

The potency is not so heavily changed (a 4,5% buff on EArrow) but it make his burst even more strong,
I wont' see my barrage modified in a damned Duality because of this -.-

Instead as BRD I would love to see my Shadowbind act fastly and not after the animation, maybe it is my connection problem, but if I use it I have to wait an entire second before to start my LB or I'll miss the target