How would you feel about Blizzard releasing storyline they can't tell through WoW, as additional campaigns in Warcraft 3? Such as the novels, episodic DLC could be released for WC3 to further the storyline in ways the MMO setting doesn't allow, yet in a more immersive medium where you take control of the relevant characters. In a similar way of either the traditional campaigns, or the Rexxar one where you would play Shadows of the Horde as Vol'jin and Chen for example.