I find little issue playing from Australia on tonberry. Most of my FC is AUS and they can clear A12S so I don't see a big problem.

Honestly I doubt I would switch even if they did do it. Sure Blizzard has Oceanic servers but it also has a vastly bigger playerbase. I am not convinced FF14's Oceanic population is sufficient to make it an issue and the ping isn't high enough problems to bother me.

Considering how long it took them to introduce EU servers and the fact they are currently spending a lot of money on existing server upgrades I wouldn't imagine we would see Oceanic servers any time soon anyway even if they did consider it.