They're probably working hard on it as we speak, no need for another thread like this...

I hope you understand that it's pretty much impossible for them to stop the RMT players completely, unless they want to make it harder for normal players too... All they can do is make it harder for the RMT to actually annoy people. That's not the easiest to do without making it worse for everyone else too. They could make options for /busy, to only block tells of people that aren't in your friends list, FC or LS, and then have a white-list on top of that, so you can add other people you run with.

Other than that, it gets a little more complicated, and you can be sure that the RMT will find every possible way to annoy you.

My server (Phoenix), have one of the most effective solutions to the problem... big population. I think it's pretty hard making new characters, because I haven't gotten a single friend invite from RMT for weeks, and I get like 1 /tell a week right now(I play less now though). Never got party invite from RMT, and don't think I've ever seen RMT spam chat. But at the same time, other players can't make a new character either(I assume, or Phoenix have some secret lol). I think a lot of the solutions will face similar problems of affecting us normal players...