This is probably my niche enjoyment, but i'm loving how DF gives you lots of reasons to go out and kill elites and not just zerg named "rares". You have them in leveling, in profession quests, in world quests and events. Lots of classes have a more interesting combat experience when enemies are dangerous and can survive a bit of a punch, and its fun both on alts and geared max levelers.
Best part, they're rarely necessary for anything that can't be zerged with group finder, so people who don't want it don't need to.
GJ blizz, keep it up, hope to see this become the new norm.