Restrict the ability for level 1 players to send out spam. While you may say that this would just be a trivial matter for those to level beyond 1 to start spamming, I can assure you there is the side benefit of having their activities logged by the server and thus be able to track down the accounts in question. Currently, the RMT spammers will just create a character, and be able to spam before or during the initial cutscene (using exploits) By pre-empting this, SE can force these RMT to have to expose the offending accounts, and also allow time for their engineers to investigate the data packets as well as figure out how these people are exploiting the system. Unless the exploiters are revealing their tricks, SE can only guess, so anyway they can obtain more data would be very helpful to them.