I feel like asking them to give a free month is pretty excessive. The game has only been out a week so far, and they gave a free week to compensate for how things have been.

As for the data centers, I'm sure they want to make sure the Oceania datacenter is secure before they release it, they don't want to have a bunch of people transfer there and then have it fail. And they can't add any more worlds to NA because their existing servers are at their limits and they can't get more right now. And they can't add worlds to NA through the Oceania servers because then they wouldn't be NA worlds, they'd be Oceania worlds.