Never played Diablows, or Overtwats, or Hemeroidstone. Starcraft was OK fun. WOW was OK fun until it jumped the shark with Warlords of Draenor and every expansion since. I thought I might give Diablows a try recently, looked at videos of that game and also Torchlight I and II. Torchlght looked better and that is what I choose, it was fun, so I have no desire to play something crude in comparison.
To me it has always been the source for the best CGI promotional trailers in the business, but with games that were awful me-too junk: Warcraft (chunky more cartoon-y Myth) and early Starcraft an outright C&C clone.
Their big money makers Overtwats and WOW are teetering on the edge of an obsolescence death spiral.
Given the corporations past actions, anything new, original and fun coming out of that environment is doubtful, so yes, this could be the beginning of the end there.
"Meet the new Boss, same as the old Boss." - The Who.