What has been growing inside of me, is a feeling that Blizzard has slowly become a company that is no longer the leader of the industry as it was.
Look, you can throw out numbers stating just how successful they still are, but it doesn't change the feeling.
They just haven't released a "major" game in a long time, and I think the reason stems from their sole purpose (it seems) to obtain "profit." Sure all companies need profit to grow, but it seems literally every decision they do now is based around how to make the most money with the least effort.
Just look at any of their new games. Hearthstone, Overwatch, HoTS... These are fast-paced and easy to play games that require little effort and can be spontaneous while rewarding. You may think all those things listed are perfect, to which they are, for profit--but not so for the games that made Blizzard what it is today.
WoW used to be a game about immersion, a game focused around exploring and choosing how to play. People still logged in, even if they didn't raid, because the "World" was alive, and people envied those with raiding gear because it was difficult. Gear, imo, is too easy to obtain--which is coupled with the fact that there's too much.
They have it on record that Vanilla WoW took them 4 years to create. IMO - they should release a "vanilla" amount of zones and quests and focus back on players exploring with new expansions and cut back on gear options, remove LFR, keep flex and heroic raiding, turn to a 4 year cycle, recreate immersion by adding back ammo, poisons and throw-weapons/ranged weapon slots and create incentives to explore the world like removing features in Garrisons like herb garden / mine and profession buildings. There's too much more to discuss, and I'm sure there's already too many people who would try to rip apart the idea of 4 year cycles for many reasons I would be adequate to debate but will try and refrain myself because I don't think they would ever understand the psychology of what got people addicted to WoW initially because the never played back then and don't understand.
But the end result is, WoD seems like the last straw in a line of continuing decisions from Blizzard that makes them seem like they are no longer capable, or willing, to produce the games that leads the industry in new directions. Again, I know Hearthstone is a massive success, and I'm sure HoTS and Overwatch will be the same, but those games design are so obviously focused on profit it's not funny to argue otherwise.
Personally, I think this is just the eventual effect that came with the Activision merge, and I think Activision is the root of much of the problems, but they won't split and the well already been poisoned so I really don't see hope.
That's it, I think Blizzard will soon become (if not already) a B company, incapable, or unwilling, to produce the complex and engaging games that made them.