It's not that meisters don't have any powers, but that they should be able to live with their powers without going to some "how to live with yourself but not become a fighter" class. Until they show me that the princess unconsciously pumps her soul into everything she touches, ends up breaking stuff and therefore needs this class to get on with life.. they're just add-ons because the equivalently weak death-scythes need someone to work with.
@Ryll: according to the description, NOT is for those who need this training to live with their powers, not to fight.
Oh, talking about the princess I found it hilarious that she slapped both the meister and the weapon's face. xD