I don't know, but I went from playing DRK, to PLD and now to BLM(Which I am still leveling, in fact) and I gotta say, BLM feels like playing a whole new game, when I was running EX1 and EX2 in the beginning at the xpac as tank and off-tank in EX2, I would almost fall asleep in the middle of the fights, I was pretty much on auto-pilot. BLM has a lot more going on and I can't just turn off my brain, which makes it 2x as enjoyable to me. It makes me almost sad how simple tanks are, and from what I hear, back in Heavensward, DRKs were actually really complex.