Was farming transmog gear in Outland when I came across these Hellfire PvP ruins:
http://i.imgur.com/P5iE5.jpg
There's large-scale World PvP, and small-scale world PvP. Let's talk about large-scale, which is also fun.
Got me thinking, why don't they add something like this in Pandaria? Put some big fortification/ruins down, and have it as a center of World PvP. But to discourage people only doing this, have it come up for let's say 2 hours in a given day, e.g. 4-6 PM. It would give increased honor on HKs/Killing blows there and maybe for every 3 kills you are helping with, you receive a token. You can buy a cool tabard or some other pet with these tokens.