"The current plans are to have worldwide servers that are cross-platform and cross-region...."
they did this with ffxi, the result? the servers were in japan, with kids on fiber optic internets pinging 2-3ms to a server less then 100 miles away, where as my silly ass livin' in 'merica was pinging like 600-2500ms... this in a game where most if not all of your end game content was world bosses you have to grab once every 24 hours fighting the entire server for claim. guess who won claim the most?
camping a monster with a full raid of people waiting for hours for it to pop, only to have the japanese kid grab it and have it well on its way to defeat before the shit even registers on your screen: priceless (actually it was like 12 bux a month + 1$ for each additional character)