Honestly, I have no thoughts on the content or otherwise. (Do whatever you want with regards to that.)
Just keep it free to play (Done extremely right. I love the ability to choose if I want to jump through levels, or take it slow. It was actually a unique thing, and would love to see more private servers implement it. You have people that want it to be scenic, or who want it to go fast.) The community has gone nuts with donations, so even if NCSoft want a portion of any profit, you guys should be fairly safe.
Security being the other thing. Knowing that the server isn't gonna just disappear over night.
