While I do agree Balmung needs to depopulate, you need to keep in mind that the current issues that Aether is having is center-wide. Regardless of Balmung/Gilg, all servers are having the congestion issues, and facing queue times. It's just the worst on Balmung/Gilg for the obvious reason.

That being said, people have /invested/ in those servers and it's unreasonable to expect them to give up their hard work on their airships, their fc houses, their friendships, etc. If it were easy to just disregard those things or there were work arounds, I guarantee you no one on balmung/gilg would be dealing with the queues and would leave. But there is no "FC/House" transfer, and it's a giant pain in the ass to reform.