If you want to increase subscribers, its not about releasing more frequent content but immersion of the player into the game world. Play is now formulaic. You do this many raids and dungeons to cap valor to obtain the iLvl to progress. You PVP this amount over this period of time to cap CP to obtain gear levels that give you an advantage. There isn't any solo RP immersion like the original game had. They've stripped out all the class specific quests like paladin and warlock mount quest chains, they've allowed faction changes. Undead warlock today, gnome warlock tomorrow. There is no character identification with the player. They have generalized the classes and the game where its now math and formula rather than RP and fun. They have bean counters now making content decision based on cost-benefit analysis. People that have absolutely no business in making games are throttling the creative effort and resources to deliver a product we all fell in love with years ago, but like any long lasting relationship, you fall out of love too.