I'm really against splitting the versatility of the mage jobs up because I for one enjoy being able to take over both offensive and defensive roles at once and it was a major part of the appeal for Conjurer for me. I feel that instead there should be traits, abilities, gear, or some other customization tool, to allow us to optimize in one role while weakening the other so we can specialize according to how we want to play our class, but leaving the versatility option open.