Personally I would like to see a magic dps that revolves around the element wheel and GEO would fit that wish. It would be the first magic dps job with a combo like system in play (Wind > Fire > Ice > Light attack) (Lightning > Earth > Water > Dark Attack). You could even add a trance phase that would change normal spells to something more powerful like Quake, Tornado, Flood, Blaze, Frost, Burst along with Ultima for light and Meteor for dark.