Legion arguably one of the best expansions ever created.
Overwatch completely dominating.
Diablo still the top dog in ARPGs.
Starcraft 2 the only dog in RTSs.
Hearthstone shattered the casual game/mobile scene.
Heroes of the Storm still going strong in a genre dominated by 2 titans.
Metzen was to Blizzard what Jobs was to Apple.
After a few rough years (Cata-WoD), D3 launch, people asking if Blizzard still had the magic sauce... Metzen you got your redemption story buddy.