I guess your right cause priest are realy for backup, revival and protection, how ever..priest can do great damage and shield themselves and they have at level 30 and up the spell to control minds. That power is best for having time to run away and make enemies fight each other and kill themselves. My point is that priest are powerful and good, they just need alot of mana...but your right a team of priest would be a bad idea and since they cant handle as muct damage as the other classes.