BRD as the game is will always be the best DD sadly (its ironic because they are always know as the great support buff the party job). The fact that more and more of the content involves so much movement alone makes them superior. MNK/DRG loose loads of dps when they have to move away from the target, or the target doesnt stay in position, or they are moved at all because we cant finish a combo to get our top damage. BRD can be anywhere and keep slapping away, at mildly lower damage, but they dont have to do combos, are not relying on the enemy position and dont have to "get off" the enemy at points to dodge or w/e. They also have good debuffs along with single and multi target skills and being the only job with real group buffs making them almost essential for any group. The ONLY downfall i can think of is not having the damage LB.

Stuff will likely onlt be more move/dodgy as this seems to be the only way to make the game hard it seems. I just cant imagine how it will be when musketeer comes (if they are DPS as we all expect) those 2 will just flat out be the prime way to do stuff.