Xenimus has always had a very duelistic theme in it. However when EJ made an entire EVIL world I think it took alot of evil out of being .. evil.
Being an evil player is a solitary, hard existence. I do think that Scelest (PK town) should have an evil square and an evil guard, but thats it. Evil players should have only the benefit of killing other players at their discretion. The new scelest should be distant and difficult to travel to/from. You should not have the ability to "make" an evil character. All characters start good, and become more good/evil based on their actions. Evil players should have some quests/special spells/items to make being evil not completely useless. Regular raids on PK town could be a lot of fun.