Why world PvP does NOT need to be encouraged. 90% of the time(really, not an exaggeration) it is just 2-3+ people killing 1 person. It is rarely competitive, it is rarely fun for both sides, and most of the time it becomes griefing because people never lay off, they just attack the moment you're near. So you say 'get a group and defend yourself'. First of all, this rarely works because of server imbalances and peoples complacency. Second, people have other things to do than PvP 100% of the time. When on T.I, there are times when it is so bad you can't do your normal activities. Just because it is a PvP server doesn't mean it is only for PvP.
Bottom line: The majority of WPvP is just a group going around globaling single people. It is only fun for the people with no threat of death. Honestly, It's on the verge of broken gameplay. It's at the point where some players would probably want to quit due to it. IMO there needs to be some sort of action taken by Blizzard in some way. Especially in a place in T.I where you can't get on your flying mount. Yes I get it, world PvP isn't supposed to be fair. But if it's never fair, then what's the point? That just sounds like a bad game.