[ratsbane]

The queue proposal sounds like a Monty Python skit.

If we adopt the rule that the next person to be served is the most recent person to join line, it's inevitable that a second line will form with people waiting to go to the first line and if someone tries to go to bypass the second line and go directly to the first line, the crowd in the first line will direct their rage at this person and compel him or her to queue in the second line - it's just as if there were only one line and the person had cut in that.