The Problem at all is, WotLK and Cata are closed codes, it is hard to edit and fix things thats why many Privat Servers Removed own created content especially at Cataclysm cause the code is so closed from blizzard that it is really hard to edit things. But with Mists of Pandarian this changed, and it is alot easier to fix and change things in it, thats why you see so many custom Content on other Privat Servers on their MoP Realms. And maybe some of you can remember that that was also said by Molten Staff before the Crash. Now u can ask yourself why nothing happens. Also the Reverse Engineering ( aka Packet Sniffing) thing, content on Retails are updated to the actual level Situation thats why you have so many differences between the Warmane Servers and the Retail Version from days ago. Sure its hard to get the content to the stand which Retail had, but to say we cant do it or its so hard at all isnt true, than to fix things in WotLK or Cataclysm is much harder than to fix content in MoP. When u read the old sites from Trinity Core and other Developers to this times you will see what i mean. 1 thing i can remember was the big Problem to add Vmaps in WotLK, so dont say its so hard, cause fixing content in MoP is much easier than fixing content in Cata or WotLK.