If people really want a PK server or area then by all means rally for it; I personally wouldn't want to see development time put towards this idea though. I would loathe having to do anything in the open world if I had people just trying to kill me (lol at any class being able to kill most healers without PvP nerfs and buffs in place) because it would just become the biggest nuisance ever. If you want to just sit and kill people, then queue up for Frontlines (Slaughter) or The Feast. If they ever made an open PK area with quests and such that functioned as any other area would, I would avoid it at all costs.