The problem is not only balance between classes. But with the new armor system, even if your hunter take the enemy down to 5hp, your mage won't finish him because he still has all his magical armor. There's no synergy between physical dmg and magical. So it's best to have a party of either full physical or magical dmg. Since physical class (rogue, hunter) are better atm, it's best if you only take physical class in your party.
And of course, races are unbalanced too. Elf >>>>>>> dwarf > lizard > human. Yes, lizard before human because +2 int for mage is nice.
