I had to make some additional modifications compared to the main server, such as removing the NPCs that sell high end weapons and armor, and making the summoning stones have a 75% failure rate, in order to avoid fights by proxy, where players just summon bears to kill the enemy's bears.
After people start getting higher levels, perhaps around level 60 a/d, I might add those NPCs back and make the summoning stones work without failure. But that's something to determine later on, depending on how the game will progress.
I have a secret character there, and I even play the game, partially because it is fun, and partially because it is easier to see what changes or additions should be made to improve it.
For example, I have an idea for a new perk (that will also be implemented on the main server, although it will be far more useful on the PK server). This new perk will be called "Night Stalker", and will cost 8(?) pick points. It will greatly increase your stealth at night, so you can evade enemies, or ambush them from the shadows. It will be cool if a whole guild takes this perk and becomes some sort of assasin guild, where they collectively go and ambush strong enemies.
One reason this will be even more effective is that many people will drink potions right before a fight, so if they don't see you prior to you attacking them, they won't be able to get their potions, but you will be able to.
I am not sure when I will have this perk done, perhaps in a few days or so. Which means that if you are a PKers, regardless of which server you play on, you might want to save a few pickpoints for it.