I do think it needs a nerf, it shouldn't be first and bring buff and utility. In term of rdps we'd like all melee to be within 1% of each other (admittedly TA being hard to tune)
So pdps should be SAM equal to current MNK dps (or very slightly under, as long as it does BLM still dps), MNK then DRG then NIN
And ideally when you look at rdps you see all of them very close.