Fair enough. How would one measure NES quality?
Update quality, which is a bit subjective, but you can tell the difference between something a mod scrapped together to shut his players up in 30 minutes and something someone agonized over for 5 hours to create a masterpiece.
Also, the feeling that the moderator genuinely cares about fairness to his players. I don't mean letting one guy win because he always loses, but I mean informing a player why something happened or at least trying to maintain some idea of realism so the player feels he/she has some control over the actions. Not that the whole NES is just them moving pieces, only to have the moderator move them somewhere else to fit his own grand design. If that doesn't make sense, I'm not articulating myself well and I need to start over

Update quantity is important, but not nearly as much IMO. I personally am much more likely to join an NES with sparse but great quality updates versus one with weekly updates that are trash

Stats and rules mean little to me. They are extras. I'm a simulationist type I suppose, so I love things that would let me micromanage, but I always fear for the mod's workload. So far we've had no examples of successful simulationist NES', and they take an assload of time to build up too. If the update quality is up to par, the rules can look like Chinese calculus (aka unintelligible) and I won't care (ex. BirdNES1).
This is just some of my rudimentary musings on the subject.
