I have mixed feelings about brd buffs. Of course, if it becomes too strong to ignore, I may switch to it from mch again.

But potency changes do nothing with overall playing experience. You have the same missed BL procs, interrupted casts after repelling shot, etc. I don't remember anyone complaining about just potency numbers (or dps), but I saw a lot of people complaining about gameplay on bard (I myself felt a lot better on mch, because you don't have contradicting mechanics there) - no changes here.