Any particular ability, gameplay mechanic, class mechanic, weakness, etc that would completely turn you off to the class?
NOTICE: POOR DPS/TANKING NOT INCLUDED. Of course if the class comes out doing half the damage or taking twice the damage as the other classes, you'll most likely reroll. So poor DPS or poor damage soaking abilities for tanks are not included as an excuse. I'm looking for a deep rooted mechanic that can't just be fixed by a simple numbers adjustment.