With the Hyperbuff, and Rain's debuff mattering a lot less, MCH should now be about ~20-100 contributed DPS ahead of Bard in a typical fight with moderate to light adds. (That's including the over-hyped stat scaling gap)

They're also more mobile, have more flexibility with their support skills, have actually-less variance, and are better for those 20-30 second group DPS checks we tend to see.

Unless there's another A1 type fight for some reason, a return of Quarantine, or something WP can break... I don't quite know why a group should bring a BRD? Outside of "bringing the better player" of course. The rarity of quality MCHs, and people failing at double Faust, are possibly going to be the only things allowing BRDs to have raid slots.