Sorry for wall of text, but I wanted to add that since ARR is going to be the first time FFXIV has graced the PS3, that's a massive untapped market to consider. I know that of all the players I knew who started the game, nearly all of them plan to check ARR out. If you look at the initial worldwide sell through of the original PC release, if even half of those people resub, they are going to need to open more servers.
I don't know if you guys know this but anyone who bought the original game gets a free upgrade to the new client, all they need to do is resub. As long as they keep the retail version of ARR reasonable ($25-$40) then you'll open yourself up to more potential subs. If they pull a full retail price act, that's not going to help win back trust for players still on the fence. With everyone else going F2P, it will be a miracle in itself if they can launch and regain a healthy population with a subscription, they just have to make sure players can see the value of their sub, and not sit on their laurels.