The way I see it PvP would be considerably improved by having any player who attacks any other player (hostile nano, pet, or actual attack) flagged as a PKer.
This flag means the player can be attacked ANYwhere (well 75% or less areas) by any player of the opposing side. (Or neutral?)
The flag is cleared when you die, to prevent reclaim camping. (Maybe not cleared when you /terminate or even only cleared when you are killed by a player )
Although you could be attacked anywhere, not everyone would want to attack you - because then THEY would be flagged PK too.
This flag *could* be set when players attacked guard NPCs and "special" sided NPCs to allow local players to help the guards out.
I think it would really open up the "war" as you would see small battles going on all over, and be free to join in if you wished.
It would also stop people ganking and never taking any risks - you cant just leap back into the saftey of the 75% zone once you have started your attacks.
You could get your guildmates or friends or even independant bounty hunters in to hunt down the person who just killed you, you could even see running battles going on accross RubiKa as people chase each other around.
What do people think?