What NEEDs to happen in this case is when current players start ARR only the established servers are online tagged with their region eg. Gungnir (NA) Masamune (JP) Ragnerok (EU) etc and allow us to choose the server to play on.

Then when ARR is officially released bring the new servers online with no transfer for a month or two and the new players can choose between an established or a new server, then you will have what you want.

I will say however I am still no fan of regional servers, stabilizing global servers will keep the game unique, but w/e looks like I am in the minority wanting to meet people from around the world, but lets not go into that here.