Wow, people getting emotional again... Can you take it outside, ladies? I'm going back on topic.

So a thought about Taumaturge>White Mage being plausible comes to mind.

The Thaumaturges we play as are part of the Arzanaeth Ossuary, worshipers of Thal's aspect and the realm of the dead. We're talking dark arts and all that sacrificial stuff here. Dark Knight & Necro stuff. Grrrr!

Meanwhile, there is the Milvaneth Sacrarium, worshipers of Nald and the realm of the living. Why do all that sacrificial stuff when you want to live comfortably? A white mage would probably find a place inside the Sacrarium much easier and if Squeenix wanted to make White Mage spring off from Thaumaturge, the wealthy Milvaneth Thaumaturges could be a place within the game's lore to do it.