I think people are bringing up a lot of good points but it seems the extreme opinions are screaming the loudest.
The bottom line is, balancing is still required. I don't think that's arguable. Though, despite the rabid response of the player base, I actually think the game/classes are in better balance after this update in comparison to what it was beforehand. THMs were so senselessly overpowered, it was absurd. And ARC mechanics were similar but not only was ranged attack favoured, it was more powerful.
Currently, my major concern for battle is the ranged attack situation. SE has seemed to fundamentally missed the point that as long as ARC does similar damage to the other dps classes, they will always be favoured so long as they design fights with no penalty for standing at range and avoiding all the AoE attacks that melee classes are susceptible to. It's actually amazing they don't see this.
EDIT: For all the people who are telling players to equip cure/sacrifice to preserve themselves, is that what we really want in a game? That's a serious question. I personally don't like the idea. I would rather have classes play a characteristic role (heal, dps, tank, etc.) than have everyone with the ability to cure a bit, dps a bit, tank a bit, etc. I know it's not quite that simple, but the point stands.