Best way to fight RMT; find out what makes it so popular-->getting something of benefit for the gil. What is it? BiS crafter gear (in a lot of cases) and run selling are the major turning points. Why do people sell runs? It's often to make the ends meet to be able to afford those BiS items, as this game doesn't really give full time raiders much keys to make gil.

My proposition? Never make crafted/buyable gear BiS. That way, the benefit of gil is taken away. That in turn is also gonna affect run-selling, reducing it by a large margin. I do realize that some people RMT for expensive vanity items, but in any games I have played where the best gear can't be bought the RMT hasn't been anywhere as bad as here.

Also take more active role into banning those gold selling scrubs faster.