Right now, except for Ragnarok, every server is full.
Maybe it will change in the next days, maybe not.
Quite a few Linkshells have a few members on one server and the rest on another server.

Everyone is complaining, but all I ever see is "I'm not moving to Ragnarok, it's for those EU people, eww."
Well, if everyone who wants to leave their server and all those split-up Linkshells moved to Ragnarok though, it wouldn't be an "only-EU" server, you know?
There would be several players from all kinds of timezones to play with and Ragnarok would be a server like any other server

Also, it would open up spaces on other servers, giving more people the chance to actually move to the server the originally wanted to move to, you or your linkshell(as a whole!)as well.
And even if you get the short end of the stick and stay on Ragnarok, it wouldn't be bad because lots of people from your timezone would be stuck on Ragnarok as well

Maybe you won't take me seriously since I'm from Europe and moving to Ragnarok anyways, but at least in my opinion it's a better solution for everyone than being seperated from your friends and LS or staying behind on a server you really wanted to leave