The problem is that especially on high pop servers there is a large volume of players who are just holding places on a server by afk crafting and other bugs. Terrible situation that you have fewer available spots to join a server because a large chunk of them are taken up by afk players while people wait for others to log off. Of course, people don't log off, they just figure out the afk tricks and create even fewer spots. They should just 'burp' the servers every couple of hours. Bet you would see queue times go down!