Honestly, strictly speaking of raid tier + ultimates. EW was amazing. DT is awesome too in those aspects as well. I really enjoyed the raids, the music, and the themes. I love that the color of the gears is no longer muted and washed out.

I can't speak much about class design, but I also don't really care much about it. If I don't enjoy the class or role, I don't play it, I play something I enjoy.