A simple solution to the most popular demand of the PvP Community:
Introduce Daily PvP quests - "Kill X players in zone Y at spot Z."
Zone and spot rotate everyday, all old world zones should be utilized. Upon entering the zone, solo players or groups of up to 6 players are randomly assigned to one of two teams.
The designated zone should also yield an increase in Kill XP and loot.
Diminishing returns and community scorn should prevent exploiting.
As I am not a programmer or game designer, I would like to know how hard it would be to introduce such a feature, all it takes is 1 daily quest to get a huge increase in content for PvPers.
/discuss.