Well, your post has so many illogical statements. Your last sentence for example; No AV is not easier to script than the others. In fact, it's biggest one and probably hardest one cause it includes bosses, and lots of NPCs. It's sort of like scripting dungeon. Well, not the same, but close to it.
Than, statement that it doesn't lag on WOTLK and Cata is false. I've plated on WOTLK for years, and yes, AV often lags. Not to mention HUGE, REALLY HUGE drop of frame-rate in big fights. So tell that to someone who never played there. And u know very well that MoP lags even as it is. Developers still haven't fix it, so it's logical to assume that in AV would lag even more.
Lastly, calling ppl stupid just because they don't agree with you for obvious and logical reasons is really nice and mature. I'm guessing you roll either Hunter, Lock or Mage since u're eager so mych to get it. Probably hunter, so u can stay in the back with no range limit and land kill after kill while others do everything for you. Yeah, I can see those ppl enjoy AV.
Bottom line here: WE NEED MORE BGs. In fact, we shoud have all of them. I don't like AV, but unlike u, I don't have such a narrow vision so I wouldn't mind heaving it, and I would welcome it whenever we get it. But if I could chose, than again: Give us Battle for Gilneas, Deepwind George and Silvershard Mine first!