It seems the main concern about the cross class systems is what is meta? I agree all tanks need a taunt and the core skills have there place. But I don't care about meta, I want to experiment. I want to play a White mage using the DOT spells of every other class. I want to be a tank that can cure myself when my healer drops the ball. I want to goof around and I think most people do. If you really care about meta so much play a MOBA (I would play a FF MOBA, sounds dope). RPGs are about exploration and creativity. And yes doing some level grinder and feeling rewarded from it.