If SE chooses Option 2, which I hope they do, there will be no need to change anything, one would hope. I seriously doubt Besaid will be merging into a smaller server, and if they take the idea of creating new server names, there will be no Besaid to accidentally choose; it might confuse a new player until they do another Google search, but it won't be the end of the world.
In any case, I'm going to stick with (and reiterate) what I said before, that there are not yet enough RPers to make a server. While I understand you are not asking for a dedicated server, I still believe that the general population would choose to avoid a server that SE even joked about as the RP server. Not because they're afraid of you or angered by you (though some are), but simply because they're afraid they'll feel out of place.
It could be said that you feel out of place right now, and I'm sure at least some of you do. However, I think several of you have vastly overestimated the number of people who actually oppose you, which I can understand. People who are indifferent won't make a point to tell you their indifference; however, those with problems are more than happy to bring them up. And something that is good about this 4-2 hybrid plan that we've heard of is that these players who absolute cannot bear another day with you are able to move away. No one is going in blind; they'll know where to avoid as soon as SE announces the new Merge outline, and the RP community decides their home. Believe me, those that actually dislike you enough to dampen your experience will be looking out for the server to avoid. Just look at the "tell me where not to go" posts--this applies to your decision regardless of whether you make it or SE makes it for you. And then, someone has already made the point that the only changes to the rules would/could be naming policies; harassment is already an offense in XIV, and if someone is bothering you about your playstyle, I'm sure a GM would be happy to assist you whether it was an official RP server or not.
Though it's of course based solely off my opinions and predictions, I think the ideal world for you would be a world split between RP-friendly casual players and RPers. If SE announces an RP-friendly server, however, the casual playerbase will fear that there will be such a minority of people for them to play with, they'll never try it out long enough to feel otherwise.
As to the assertion that people would be more likely to see the "simple edit to HTML," if someone is not going to notice the decision posted to the RPC and these forums, or hear from a fellow RPer, there's a very good chance they wouldn't know about the official announcement, either. The risk of isolating the RPers to their own server is greater than the risk of losing one or two people who do not have the drive to locate the new RP server.