First of, I see plenty of hackers that have been reported for VERY obvious hacks. I checked the records and found that some of them have an FPS of 0.01-0.1, so I threw those away. Even after that I still found that the working records had to be reported up to TWELVE times (OreBakaOtaku@GunZ is a nice example, as well as Flugel and Esexer) before I even got a reply.
Secondly, I want to know if you have found ways to identify and punish the users of NetLimiter. Blitz is potentially the best game mode since the existence of gunz in my opinion, however I and about every other legit player (although that's less than 10 players I guess) quit gunz entirely after it was made clear that approximatically half the players with a win:lose ratio better than 1:1 uses NetLimiter and are invulnerable to both NPC's and enemy players, even though they can see and hit the NPC's just fine and deal damage to the radar.
Before anyone goes rant over my legit player statement: I consider people unlegit when they symphatize with hackers, or people who quest with hackers, or people who blitz with hackers, or hack. Symphatizing with hackers includes having them in a clan you are willingly in. Obviously you don't mind having hackers in your clan (Aritus, Hometown, CivilAngels, InnoStars, Inactive, Corp, Silverlight, Jungle, Exogamic) or you don't mind playing with hackers in order to gain experience (CivilAngels, Eden Garden). These are facts. Do with them what you will.
What I am trying to get to, is that in order to stop hackers, you also need to stop their support. Sadly, their support is EXTREMELY large. And I estimate 99.9% of the 'support' aren't even much aware of ethological aspects of their actions. By playing with hackers you reward them with attention, thus they continue hacking. Before sending in reports like mad, perhaps it would be wise to have a good look in the mirror. Do not play alongside people who favour hacks. By doing so you'll be part of a very small community (as of yet), but at least you'll be welcome to blitz on my team and have a clean slate.
Sorry for my provocative reply,