Doubt this would ever be addressed by the devs but for the longest time I've wondered how it is that Paladins suddenly added spells to their sword and board arsenal. I know obviously that the Paladins in FF - and fantasy in general - have the ability to channel divine (or white) magic, but I always felt like it came a little bit out of nowhere in XIV, to the point that not even the job quests ever really refer to anything you do as "holy" or "divine", then we got the "Divine Magic Mastery" trait, giving name to their particular school of spellcasting, being a reference to FF11 for one, but also being namedly unique as compared to Black Magic, White Magic, Red Magic ect.
So out of sheer interest, I'd love to hear what other people's take on the source of a Paladin's spellcraft is.