I hope they include something like this in the central pvp zone. Any of you play DAOC? My favorite thing was Darkness Falls - a huge dungeon that your faction could open by controlling a large portion of the pvp objectives in the frontier. Once opened, you could go in there and hunt for good experience and nice loot from interesting bosses. Not only that, but you would run into groups from the last faction that controlled the entrance, creating very fun and spontaneous pvp encounters.
Knowing Matt Firor is in charge of this game, I'm hoping he put some fun things like this in the PVP persistent world map.