One immediate drawback to this, as I highlighted in my previous post:
When the game was launched, the hype was immense. Fansites and general gaming sites alike were scrambling to get any news about Final Fantasy XIV on their front pages. Any, and that included news about roleplaying. Even some non-FF XIV focussed sites distributed the news that the roleplay community had chosen a server to congregate on.
That.. isn't going to happen again. We'll be lucky if all the primary fansites distribute this news, and I have strong doubts knowledge of which server the roleplayers are on will have been distrubted so much as to still be common knowledge by the time v2.0 launches, even among people actively looking for it.
An official server designation resolves that problem instantly, even if it does have attendant issues of its own.
Obviously we're still considering the unofficial option, but it's not the godsend you make it out to be.