I've been surprised how much fun I had revisiting HotS this week. A lot of that is probably because of the big bundle of heroes they gave out (and finding one, Johanna, that I really like). It's been a while since I played any moba, so that probably also contributes to the fun. Even the players are less horrible in this game this week. The worst behavior I've seen has been extremely mild compared to the venom you get in LoL or Dota 2.
On the down side, loot boxes are pretty lame; possibly my least favorite loot system yet. Dunno why Blizzard thought all-common boxes were a good idea.