They're not implementing a full queue system because the don't WANT you to know how many people are locked out of the servers. When you got into a queue on your first try and were in spot 4385, you'd be able to tell just how TERRIBLE their initial server set up was laid out.

Basically, they set each server to a max of 5000 people, then they let 20,000 people create characters on each server. They don't want you to know that, so they max the que at 250 and let everyone else mash their 0 keys for hours at a time.