1) http://en.wikipedia.org/wiki/Western_world and http://en.wikipedia.org/wiki/Eastern_world how people usually accept as "westerner" and "easterner" though that doesn't really matter on my serverwe only got 2 type of people, 日本人JP and 外人gaijin.
2) Keep your own play style to yourself. Some people actually try to make friends from low level and would actually want to know the person a bit more before adding them to flist.
By limiting PM is not going to do anything, you are just going to see shouts/say/yells in the starting cities/mor dhona/coerthas, anywhere where people are going to gather. Nor is botting to level15 or whatever is hard. There's already bots out there that runs FATES, you can even try to youtube some of these. SE is pretty notoriously bad at banning these bots, I don't see much teleport harvesting bots on my server anymore but spiritbinding bots is rampant. Got these people with 1 level 50 class - everything else 0 and no job, but class that just sits in the same spot killing things that is within their attack radius, never moves. Once in awhile goes back to town and literally spends over 5 minutes converting all the bound gear. Same bots been around for many months, nothing been done.
You're not going to get rid of RMT if there is demand for what they are selling. You can hinder them at the cost of possible collateral damage to the legit players, but they are not going to go away, they will find new ways to advertise.
However, if there is no demand, you aren't going to have much RMTs. Here on Mandragora, my blist is empty and I haven't received any RMT tells in at least a month, they don't have much business here and leave.
As for people saying to legalize gil selling... gil is already relatively worthless on XIV, selling it would just make it worse. For now, the only thing that you actually need a lot of gil are the FC housing... might as well sell the house? While we're at it, going down a slippery slope, let's sell tomestones? Make this into a pay to win game (with subscription since Yoshida says it's never going to be f2p)