The private servers have been up a while. But it is always hard for fan projects to gain traction for devs, players, or donations, when the IP could be yanked at any time. NCSoft granting a license should provide one heck of a shot in the arm for this cult classic game.
Go. Hunt. KILL Skul!
There used to be a project trying to reverse engineer it that I was following (Infinite Rasa iirc) a few years ago but I haven’t checked on it in a long while. I’m guessing it never came to fruition but think I’m gonna check it out again!