I'm more interested by the simplification of the hate algorithms.
I don't really care about if hate is displayed or not, this is not what will change the battle dynamics. I guess it will make people learn their role sooner within a given class but I really don't see how it makes the game easier, you still need to manage that hate regardless of if it's displayed or not.

I mean, does displaying HP bars make healers job easy-mode? It's a question of balancing actions, managing mp and timing, not a question of calculating how much damage every single player got from enemy attacks.