What exactly is the relationship between the magic classes?

[Skies]

As for how arcanists work as a customs house.
Did you do the quests for it? It essentially has you running that work! (And they use carbuncles the same way one would use sniffing dogs)

[Artamie]

Sacrifice was a Thaumaturge spell up to 1.18

That is neat. While I understand they changed the thm and con spells to better define each class and their job expansions, having the characters in the game acknowledge the change and giving an actual in-game reason for why this change may have been made is nothing short of great work! Aside from explaining how monsters suddenly became bigger, I wonder what other hidden stuff like this is out there!

[Enkidoh]

You have to remember though, when 1.0 was first released, classes were a lot different in how they functioned to how they are now (for instance, CNJ originally had the use of spells of all elements, including Fire, Lightning and Ice), and Jobs were not even in the game at all - they were only added towards the end of 1.0's life, hence classes had to be completely overhauled to compensate.

This is why THM lost Sacrifice, as it's traditionally a White Mage ability, and THM was made to upgrade to Black Mage, gaining the CNJ's Fire, Ice and Lightning spells (because CNJ was made to upgrade to WHM and focus more on healing). It had nothing to do with the lore of the class - it was purely to balance gameplay mechanics.

[Catapult]

Indeed, a great deal of the magic system application was retconned. It's probably important we don't read too much from the old system.

[Meliae]

Guess what we became? I am thinking along the main story here. Since even the person who made you one still does not know the reason why they vanished.

actually he knows why they became that, he tells you about it when he gives you final af peice, also as to why blm vanish is simply overuse makes them part of aeyther, like the spirits from ffx where they can still have physical presence but are not physically there, so once they give in or feel content with their work done the void claims them.

[shinros]

actually he knows why they became that, he tells you about it when he gives you final af peice, also as to why blm vanish is simply overuse makes them part of aeyther, like the spirits from ffx where they can still have physical presence but are not physically there, so once they give in or feel content with their work done the void claims them.

Hmmm I think I need to watch the scene again. Still that sucks anyway lol not much of a difference.