As far as I know, they haven't got a database at all. That's not the most skill-intensive part of making a server, but it is the biggest workload and one that can in no way be done by one person. If you want any kind of legitimacy, it takes a shitload of research and testing or you'll get a Kegz-like mess of broken, inaccurate bullshit. It takes easily a week of hard, boring work to do the spawns and loot tables for just one zone, and burnout is another huge roadblock as people typically can't stand doing this for any length of time.
Getting a passionate programmer to code the engine isn't really the big issue since you know there's already one there, it's the database that tends to present the wall that kills off projects like these. There'll be pressure on them to produce something very close to legit classic because they can't get away with doing something significantly worse than P99, but it's still surprisingly difficult to actually get it right even when you have something to model it after as it's really not that easy to glean spawn locations/timers and loot tables without access to the data.
Harakiri is nowhere near done and is facing the part that's most likely to kill it off because it's no longer just up to him but rather to a bunch of volunteers who will need to spend weeks upon weeks doing the most boring shit in the world for no pay and with no real obligations not to quit on him.