Old Blizzard is dead and has been for almost a decade--the name's the same but their job now is not to make great games that push the envelope in game design but rather to manage cash-printing franchises. It's hard not to think this when so many of the people behind the original groundbreaking games (StarCraft, WC3, D2) have left the company and in some cases disavowed it.
Be happy that old Blizzard happened, I say, and look on with eagerness to new indie studios, many of which are being run by the same Blizzard vets.