Let's start with the basic bitch class of Fighter, it really needs some kind of nerf because not only can you tank whole lotta damage but you can also dish it back out at insane rates. It's the only class that gives you an AOE basically at the start. and with Cait you're basically immortal. Next up is Thief, a class that should have the highest DPS but ranks third because fighter needs to be nerfed and Black Mages because half the items in the game give a magic boost. I haven't really messed around with this class a lot (only having done half playthroughs with it) but from what I gather it's just a worse Fighter with a gimmick that you rarely use. Let's do Charmer now because I don't want to go in order, To be honest I've never actually played charmer because I hate being really weak in the early game but from what I've gathered, it's really broken, but in a way that makes sense, especially since you're mostly fighting lust-addled barely sentient beings, living plants, or demons. Let's do White Mage here because there's not much to say about it. White Mage is probably the most boring class to play as all you do is spam one ability and use nothing else. Black Mage, the class you expect to be the strongest of them, and while it certainly is strong, it takes way to long to actually get anything done with it, expect to grind for an hour before doing any amount of damage with this class, and be getting your ultimate before fighting the kitsune village. But once you do get going, it makes the game exceptionally easy, while this class has no effective one of one spells it's does have both Fireball and Arc cannon, which almost guarantees you'll win any encounter against more than one enemy in two turns, you'll also never change gear after getting the witches corset and two mages wands (besides maybe equipping a metal wand). I think that's it then. Overall the only class that needs to be buffed is Thief. The classes that need to be nerfed are Fighter and Black Mage. And the only class that needs a complete overhaul is White Mage.