Maybe they should simply let players choose between PK and no-PK maps or even worlds, like UO. BTW when UO started offering consensual-only PvP worlds, many longest-standing players felt the game was getting dumbed down.

Stwike him, Centuwion. Stwike him vewy wuffly! (Pontius Pilate, "Life of Brian")
A fart without stink is like a sky without stars.
TGS, Third Grade Shooter: brand new genre invented by Kevin Butler exclusively for Natal WiiToo Kinect. PEW! PEW-PEW-PEW!