I could go along with the idea of not losing xp from a PvP fight. He's right, you don't PvP to gain xp, so why lose it? It could be exploited, though. "Hey bud, the area outside this mission has lots of red mobs. How about you kill me to make sure I get back safely?"
The other idea of creating a character that will never do PvP... maybe. But only if that char is barred from entering any land control areas or any zones that have less than 75% gas. Otherwise, such characters would be the ultimate spies, and would just add to lag in battles. Even in that case, it could be a problem if FunCom ever wants to change the gas in an existing area. Your character could log out in a 75% zone, but log back in to a 25% zone.