Granted they need to fix some shit in the previous battlegrounds, overall I find them to be great PvP experiences. I especially like AV. When you get a good coordinated fight going its a badass PvP experience.
I really feel bad for you guys which cannot enjoy AV because your server pop is skewed. I just got done with my 5th win today.
I do not see a dim future for WoW PvP, IMO its a blast so far.
The only fear i have is when they introduce more and more of these battlegrounds, the old ones wont be queue'ing up anymore.