I meant the FF3 for the DS, which was the FF3 not released in the US until now. FF6 is the one with Espers if you go by that system, I think.
Hmm, well...A lot. There's three tiers, and each are based off a Knight, Archer, Lancer, Brawler, Thief, Assassin, Fencer, Priest (Light mage), Cleric (healer), and then a mage for each of the elements, excluding light (fire, ice, lightning, water, earth, wind and shadow). Oh, and there's the "Novice" that all characters start as.
I guess what I'd like is a segmented menu, where in one pane, preferably the right, you can see the character in question's stats and already-assigned-class, and another pane, the left, where the classes show in an ordered list, ordered by class grouping.
That's all I can think of.