I do agree that having multiple regions would certainly help for performance across multiple areas around the world, but there are a lot of factors that need to be looked into before anything like this gets started on or implemented. We would need to locate and find new trustworthy hosts from different areas across the world which would be able to handle the amount of traffic we normally receive. There would also be a lot of changes required to be made to our infrastructure, based on how players are connecting to the main network through these hosts.
There is no doubt that this would also create extra challenges to get everything running smoothly.