I just want to say one thing:
KOXP / Heavefire has always worked despite of the presence of Xtrap. Most Chinese gold farmers came to USKO after countless of forum advertising on a China KO Fan forum. Originally the forum was created to discuss everything about USKO, served similar to KO4LIFE. These players are all legit China players from Ronark / Xigeon / and Girakon, but since there is a tutorial section on the forum to teach everyone how to register on USKO / how to use proxy / and play without lag, more and more illegitimate players (aka gold farmers) started to show up.
As for KOXPers getting stronger. Regardless of how strong they get, they will never PK etc. Their job is to farm monsters and sell items for IGC and sell the IGC for USD for a living. I don't see how they will turn out to be a threat in the community. There is no way to stop them unless they somehow prevent Koxp/Heavefire