Warcraft is no longer a driver of ATVI profit or revenues, but instead is a back-burner steady earner with good volume but very few prospects for any long-term growth.
I think that's an accurate statement.
I'll also say that I think the sharp decline in subscribers during the Cataclysm period had a lot to do with the shuffling of the officers in charge of actually making and running the game.
From the original release to the middle of the Wrath period, Jeff Kaplan had final responsibility for the end game activities. During the Wrath beta, they brought in Greg Street and had him train under Kaplan. Then in the middle of Wrath, they moved Kaplan over to the Titan project. Following that Greg Street and Tom Chilton have been in charge. My guess is that the last major project that Kaplan ran was Ulduar, and the last one he had influence over was ICC.
I think a lot of what we saw with Cataclysm was Chilton and Street wanting to redesign the game in their own image. It took Kaplan 4 to 5 years to figure out how to approach what the player base wanted. I think that's pretty much the horizon for that sort of thing. When you change personal you sacrifice a lot of experience and it takes time to recover that.
Mind you, that's all just speculation on my part.