The lights are on
Although its controller implementation on the console versions of Diablo III have won praise from critics and fans, don't expect it to be added to the PC version of the game.
When asked about the possibility of adding controller support to the PC version by Eurogamer, Blizzard senior level designer Matthew Berger said that adding a controller requires massive changes to the game's design and balancing.
Berger said, "The rhythm on PC is tactactactactactac - you're clicking the mouse, you're telling your character where to go," Berger said. "On console, the rhythm is very different. It flows more, because you're constantly repositioning your character with the thumbstick; you're really never stationary on console, whereas on PC you're a lot more stationary... When you're playing on the PC, you're not really looking at your character as much, you're kind of focusing on the cursor. Whereas on console it's the exact opposite, you're drawn in."
[Source: Eurogamer via Joystiq]
Our Take:While this might be disappointing to some, it's indicative of just how complex designing and balancing a game is. Each choice can create a "domino effect" that rolls through other elements of the game. That's why it's not always easy to add things like a new control mechanic or co-op to games that were designed with something else in mind.