Couple things:
First, my friends and I created a facebook group to coordinate server selection so we would all be on the same one. Worked great! Hooray for planning.
Second, I am too lazy to look up the specific comment, but I am fairly certain I saw Stephen Reid mention in his AMA on reddit that server changes would be coming, but they wanted to let populations settle after launch first so they don't get hordes of people moving out of full servers creating dead servers, which causes server merges, which are a bad thing.
Due to rolling access from EGA and the never-before-seen number of launch subscribers they had to leave some restrictions in place to start with in order to limit the chaos.