Quote Originally Posted by Pence View Post
They never changed this...
Literally meant before Stormblood you had to level Arcanist to 15 and Thaumaturge to 30 (with THM Quests completed) in order to become a Black Mage as example.

The Way Cross Class Skills worked before Stormblood (Not Role-wise) required you to level around 2-4 Classes.

Both has been removed since Stormblood.