Does no one realize that with the ability reasignment, you'll generate Esprit faster, meaning more Saber Dances, which is an overall boost to potency.

Now I'm not saying additionally boost might not be needed. But this adjustment is just a mild boost until they see savage numbers, or get more data. I mean just look at the SMN changes, they boosted the potency of the Phoenix phase because it was weaker than the Bahamut phase, but nothing else changed, when theoretically some of the other spells should of changed as well.

Remember not all potency boosts are direct buffs to a skill, some are passive adjustment, like a CD adjustment or gauge generation, which is what the DNC buff is.