One thing that freaks me out is that I nearly always get a queue when logging into balmung. And right now, not -that- many people seem to be playing.

If the population doubles when the expansion is released, will servers with heavy populations (like balmung) be able to handle the load?

I get disconnected a lot, and it would really suck if I couldn't complete a dungeon because of a 20min+ queue wait each time I have to log back in. Even now I occasionally miss out on a dungeon if I D/C near the end, due to the occasional long queue.