Originally Posted by
Nalien
it's a generalization of what the Class is, in this case someone who uses poisons; a rouge. They do that so that they can leave Classes open to as many Jobs as possible, Rouge => Thief is no different than Thaumaturge/Gladiator/Marauder => Dark Knight, or any potential Jobs you could fit onto the current Classes. They've always gone with Jobs being the popularized core (sorry Tactics fans) Final Fantasy Jobs, they were never going to make the Thief the Class just so we could go "JUST LIKE FINAL FANTASY I HURHUR!".