So, I recently changed my opinion on World PvP when I actually went out and pvped in the world. Ghostcrawler's response to world pvp was simply bring your friends, you cannot balance it. Well I think you can, to an extent. Blizzard has the capability of scaling your gear down anytime you enter an Instanced battleground. They can also do the same in Dungeons and Challenge Modes are evidence of this. If they can do it in those areas of the game, then they can do it in others. In Patch. 5.3 they narrowed the pvp gear gap in instanced pvp but widened the gear gap in world pvp. So, any pvp zone like Tol Barad, Wintergrasp, Halaa, Hellfire Citadel Towers and every pvp zone in game, Raid gear will always beat people in pvp gear because there's a huge gap. If they allowed pvpers to use conquest to upgrade their gear that might alleviate the issue abit but I really believe they should simply introduce item level scaling.
I heard talk from Blizzard they're considering making War campaigns that would include Alterac Valley, Isle of Conquest, Tol Barad and Wintergrasp all into a separate queue from other battlegrounds. If they go ahead and do this, I'd imagine item scaling would work in them. I just think they should implement their scaling to all flagged pvp zones in the world, so pvp can be about Skill and not about gear.