I am super thrilled about the battle content of this expansion so far. The content feels engaging. I feel like I have (and need) more opportunities to actually learn how to do fights, and I look forward to learning how to do them optimally.
The increasing usage of the arena is super cool and I love the ideas being put in place.
With all the negative feedback, though, I feel a little déjà vu from WoW's Cataclysm expansion where Blizzard also tried a ramp up in difficulty of casual dungeons, but eventually had to scale it back.
Either way, major props to the boss fight team, I love your new work!