Here's the issue, the people who bought the gil only got temporary bans. This punishment is not severe enough, it does NOT deter people from buying gil. Before you say "It's bad business to permanently ban paying players." I don't want to hear this. It's not a good excuse when the constant harassment of gil selling /tells drive players away. I've had several friends straight up quit the game because of this. You may not see it as a bad enough problem to push people away. Some people are far less tolerant to stuff like that. I mean how about you sit in a cutscene and you're constantly getting hammered with RMT tells that just yank you RIGHT out of the experience, and there's nothing you can do to stop it until you are out.

-Bring harsher punishment to those who break the rules.
-Give us Right Click >> Report
-Remove the Blacklist Limit
-Have GMs monitor the zones.

I'm not saying that SE isn't doing anything to stop the RMT, what I am saying is they're not doing ENOUGH.