How would the guild wars start? A rough game of cards or insults directed to people\'s family members?
I\'m not going to spend much time at this at all, because there will never be a 100% satisfied player base when it comes to the subject of PvP (or Anything really).
I actually don\'t know what the specific genre plan is for PS. But there wouldn\'t be a PvP discussion forum if there weren\'t any plans for PvP at all. Theres many approaches to it and they have already been stated. Full PvP, Arena PvP, Optional PvP, Character Selection (PvP or not PvP permanently).
Let\'s face it, if this game is aiming for realism, full PvP is the most realistic aspect with a controlled system.
I could walk up to any of you and shoot you with my shotgun, but it\'s not like there are no consequences for doing so. You have to make people AFRAID to attack other players, so only the bravest (or the people with the lowest IQ\'s) attempt it. The NPC Guard idea is already used, already suggested, and always capable. But usually it\'s not well enforced in games, and it\'s never much good once characters start getting really strong, (and they just beat around the law like ragdolls).
I salute you if you can single-handedly stage a riot against an entire city\'s law force.