D3 is alive and kicking again nevertheless all the people who tried to bury it.
Nobody tried to bury the game, that's some seriously paranoid shit - Blizzard was doing a pretty great job of that on their own by going into a developmental freeze and then announcing a mobile game to a predominantly PC gaming market at last years Blizzcon. I think from the uproar that Immortal caused, it should be obvious that nobody wants Diablo to fail/die; there are a ton of passionate ARPG players out there and the more ARPG's that exist, the better. Competition breeds creativity.
On topic: It is my hope that if they don't announce a Diablo 4 this Blizzcon that they announce some sort of expansion or revamp on the same scale as what Reaper of Souls and Loot 2.0 was for the game. No, I am not saying that they should streamline the game even more and I am not saying that I necessarily endorse the Loot 2.0 system, but they need to shake up the current state of the game by:
Allowing for more build diversity
Putting something else in the game to do that isn't just Bounties, Nephalem Rifts and Greater Rifts
Revamp the entire crafting system
I think in some ways, Blizzard's quality of life is amazing: a pet to go pick up your gold, picking up all nearby resources of the same type when you click on one (to avoid RSI), objective pointers on the map... but they need to come up with more engaging or enabling content, which is why I believe that 2.6.4 did so well in comparison to the seasons proceeding it. D3 is currently stuck in this rut where classes have 1-3 total viable builds at most and they have completely invalidated most other sets/legendaries in the game.