I'm loving 5.4 which is somewhat surprising because it's probably the patch I was the least excited for. Maybe that's because I didn't did the last two patches, but this one offered a lot. As I say in the show Timeless Isle, might be my favorite thing added in a patch, maybe even ever. I'm really digging that place. Flex raiding feels awesome and the perfect level of difficulty for what I want in raiding.
Overall it has gotten me from playing other MMO's to logging in on a near daily basis. Which makes me happy, I'm sure makes Blizzard happy, and it means I have stuff to talk about besides Hearthstone.