kpau: After some looking and thinking and brainstorming with friends, we've kind of come to a conclusion.
What has queue isn't logging into the world but the login server itself. It's an anti-concurrency measure, so that the login server, which is kind of global, doesn't crashes itself with people trying to log in concurrently you're put into a queue to have your login request processed. The result of your login request is dependant on the world, you can still get a "world full, request denied" after your request is processed.

So getting a queue is not at all indicative of ever getting in the game, it's that even the very login system is overwhelmed