I'd like to bring some attention to the discussion regarding Rated Battlegrounds being disabled on Cataclysm.
https://www.warmane.com/bugtracker/report/237
Currently the bugtracker report for Rated BGs is the #1 voted for issue to be resolved with 50% more votes than the #2 issue (Nefarian being disabled), which for the past few weeks has been the highest priority of developers and is close to being completely scripted and re-enabled. However, Rated BGs is still the #1 requested fix by the community. The reason why it is being neglected is this:
http://i.imgur.com/m3cR5tq.png
Now, first of all, let me start by quoting this response:
http://i.imgur.com/AsZMHf8.png
Second of all, the argument that an amount of atleast 20,000 active players would be required for an active ladder is not only incorrect, but also irrelevant. When MoP was released (with a population of 10,000 active players) the Rated BG brackets were highly active. And even though the ladder might not become as active as the arena ladder; it doesn't matter. Rated BGs would be used as a platform for PvP guilds to challenge each other, as they were in the past.
The demand is there, I think this thread has proven that.