Lore-wise as the Warrior of Light you have the Echo of Word (among many others) and can communicate with creatures most people of Eorzea can't, and talk their language. Later on Polyglot reflects the mastery of languages. I think this a neat touch to Black Mage lore that had never really been explained in depth due to HW Job quests writting to lack on many places.

As for gameplay, Enochian only still exists as a button in form of a minor punishment for messing up the rotation in less than 30s of its use. On Heavensward it was a content button to be pressed during the rotation, every 60~75 seconds or so.