Kaer did explicitly say that the developer team is spread thin and cannot maintain all three expansions together, let alone maintain them, along with the growing concern for profit loss, and the dwindling population on the Cataclysm realm, (have you seen Cataclysm realms now? From 3000 players towards 900 players in less than a year). More importantly, you have to consider the realms in a more economical position, is Cataclysm still profitable? Out of the 2100 players (at peak time, 1500 midpeak, 900 lowest) that play this realm, how many actually donate on a realm that's underdeveloped and lowly maintained? Secondly, I have to, again, reiterate what Kaer said, their developing staff is spread thin in terms of development, would you rather see a broken expansion, with only possibly 5-6 month fixes (and a chance of another bug to happen) then waiting another 5-6 months? Third, is the growing concern of profit loss and upkeep on Cataclysm realms.. does that really need much explaining, rather than continuing development in hopes to attain an increase in population, it would be simply more profitable for Warmane to cut off Cataclysm, rather not take the risk and continue towards the most safest route.