12 million sold
88 average metacritic
online still thriving
definitely a success in any sense of the word
grumblers are a small but very loud minority, even so, Bliz is trying to help them out and make more reasons for peeps to replay the game or engage in the endless ARPG endgame.
They just add more awesome with every patch.
Grumble away but it doesn't change the fact that you are complaining about a resoundingly successful game loved by the majority of its players.
*cough*3.8 user score*cough*