This game's diversity is that it is designed for you to be multiple jobs. Want to do good dmg with some survivability go dragon or mnk. Want to be tanky, go pld or war. Want to keep people up and rely on your comrades to save your tail, go whm or sch.

I like the way the classes are, they will be easier to balance this way. It will be more about who has the best strategy and skill and less about who is stacking what stat and who has the best gear.