Why is BLM getting a buff?

[BloodPact]

I see them:

A) Slightly buffing BLM's single target through potency increases to main rotation and bringing down AoE damage to about other jobs level.
B) Slightly buffing BLM's single target through potency increases to main rotation and buffing AoE damage to the rest of the DPS jobs.

I highly doubt they'll buff BLM single target and still leave them with the massive advantage they have over the rest of the DPS in heavy AoE fights. That's probably why they said in the Live Letter they were not just looking at BLM with the coming changes.

Also, since the problem seems to be on movement heavy fight, the balance could be to lower the potency and casting time on spells for the single target rotation.