Hey. I haven't gotten in to your server yet. But I am still trying:)
Anyway, I don't know if you have this, I guess not since I've seen and read some posts about people complaining about getting pvp'd in New York. Now, I'm not an experienced Mod developer or a really active freelancer player, but I do know it's possible to disable PvP damage in just the New York System. Me and my friends played on a server called Gateway Galactica (dead now as many other mods), and the pvp immune new york system worked really well. So I thought that might come to consideration for the new york system, so then you don't have to worry about rulebreakers.
Anyway thats just my suggestion, I thought it would be easier that way
Lol thankfully too. There were starting to be a few instances where people were getting killed in NY. Now I can sit there and shoot people all day and with No effect! horray!