are you really crying for BRDs over the COR change? BRDs still have March, Elegy, Finale and Lullaby (while Quick Draw is still on a 1 minute timer without merits).
...and COR still has Slug Shot, elemental shots, and other buffs BRD doesn't have like MAB, HMP, DA, crit rate, pet boosts, etc.
Both jobs have things the other does not already.
Why should a COR be able to pop 100ATT or more on with a single roll when BRD, the job that does nothing but buff (outside of subjob spells), needs to use both songs to do that? Granted, you can stack them, just like you can stack Refresh and double Ballad. But there's the lack of balance there. A RDM needs to spend MP and cast Refresh for one person at a time versus double ballad. What's a COR have to do? A couple JAs in less time than it takes to cast a single Ballad.