Quote Originally Posted by Oizen View Post
Until the devs say its impossible I see no reason to see why it is.
The Data Centers are the main server computers. Each of them are running multiple Worlds. Going between Wrolds on the same Data Center is easy because they exist on the same physical machine.

When you travel between Data Centers, the server needs to send your character's data over the other server. Which is why there's that wait of varying length when you do it.

Unless you'd be willing to wait for the length of time it takes to jump between all Data Centers in your region (which can at any point in time slow down drastically due to traffic), before you can join a party, it isn't physically possible to do.