My big problem with WoW PVP is that they don't make enough maps. It's totally unacceptable to have only 4 maps to play on in battlegrounds for a game that's been out for this long. Make a possible 2 or 3 map variations for each!

Blizzard are adding a PVP-only zone in WOTLK, so we'll see how that goes. My problem with world PVP in general has been that one side will win due to pure numbers. The team with a lot more people almost always wins, and how do you have a good time when you don't have a fair shot? I know a lot of people here were saying in other threads that they liked the possibility of having to overcome great odds, but I doubt this kind of imbalance would hold your attention in the long run even if you think you'd enjoy that for a couple months. At some point you're going to need to win battles to advance your character, and when you can't do that because the other side has more people all the time, it's not going to be enjoyable.