That would be about it, to clarify taking both perspectives into prespective (lol):
Assuming the thief's "i can make potions even more powerfull" issues are at least tweaked, ofc. (I'd personally make the current tinker a base class, call him the thief and bring shops into the game earlier, rename the current thief "the alchemist" or "the drug dealer" and make him unlockable by a vicious dungeon comleted run or something, but hey...)
Fighter and Priest are too bland, weird and narrow, the last especially if the thief is the baseline. Furthermore the fighters signature ability is also Tiki Tooki's signature ability (and he's the god of rogues, wtf).
The Priest is even weirder, I've always had to stretch my imagination to see him as a priest, really, and he has no synergy with gods (and he feels more like a paladin than the paladin does, and the paladin feels more like a priest). I'd personally reshuffle their abilities somehow, but the priest skillset is way below the curve as 2 of his abilities revolve around HP (infinitely less usefull and more plentifull by design than MP), and the third is situational. If the dev's want to make him and "INTRO" character, they should link him to gods somehow, since there is no class that really introduces players to them.
* Good way to do it would be to have him start with some piety plus a way to gain piety, make the pactmaker available from the start and scouted (maybe even spawned) for him, and lump his bonus hp and hp potion abuse skills into one ability.
Vampire i don't really care about, monster classes seem like cute gimmicks to me, but I could never really see the point of something that breaks the race/class mold. I don't have any opinions on him.
The wizard... Well, I was always really satisfied with how the magic building progression went from "balanced pure spellcaster" - "slightly stronger spellcaster generalist" - "wtfbbq7kindsofbroken cheatcode". With fireball being a possible prep, the wizard kind of lost his place compared to the Sorcerer (who needed to look for a dmg spell in the alpha, with no scouting, and so did Bloodmage). Not sure what to do really, but replacing his -att debuff with any sort of usefull ability would be good.
The Monk - I love him because i've used him and abused him all over the place, but i'm not sure a high resist char can be balanced at all, as it is a bigger advantage than it looks (he was the first thing I cleared everything in alha with, after i did it with the thief). I'd personally do my best to try to rework him into a pissedorff/wheytwut character, we don't have one, and it could be interesting. Also that way, when designing maps, and gauging monster HP and dmg, you don't have to take into account people walking in there with a char that has almost boss like resists.
The Transmuter - scrap him, admit defeat, whatever, balancing a guy who can turn walls to mana, and just ignore exploration space as a resource thats too much time and effort however you build his skillset. Balancing him means making every map take him into account, and that is just unmanagable. He beats GaanTelet. Just... no. Rework him into a proper transmuter, something around IMAWAL, as he is he is more of a miner right now...
Warlord - I haven't played him much, not really sure about it. Anything that abuses cydstep is silly the way I see it, and having free cydsteps off taurog be the default endgame for melle classes... I mean, any taurog char is warlord, which is why i never play him - taurog's cydstepps are ussualy enough and they let you ignore mana as a resource. He feels underpowered to me, as he is like a worse berserker that has to skip taurog in order to keep track of an entire resource just to be able to cast cydstep. Also, the reason Fighter's Pit Dog ability looks bad is because Taurog and the Glyph give it on a repeatable basis, if that wasn't so the fighter would have a clear and distinct advantage, and the game wouldn't have to take into account melle classes just ignoring hp as a resource every time they find a cydstepp on a stick.
*also, the cydstepp glyph in and off itself is possibly the major reason it's not obvious how broken the current thief is. What good is exploiting potions in obscene ways, when hp as a resource can easily become irrelevant to anyone who can abuse cydstep? Somthing to be considered.
Bloodmage - Anything that can get full mana of one potion is just wrong. It's fun in a powergaming way, and all that, but the way he is now obsoletes anything that intends to use a fireball, and he would be obsoleted by anything you could make that is better than him. Tweak, rework, something (although I do like him as a concept)