How can you reserve a spot for someone who is not yet playing when they are all taken? Another option would be to either increase the maximum number of players or change maps and do the same. Since there was no problem getting 10 people, we could quite easily change maps and do 12-14 people...
I would love to play on my map, the Abstract Sky Tower. It's not as pretty as the cradle, but I think it's a pretty fair map, and quite easily adjustable to a Capitol VPs Map.
See here:
http://forum.shrapnelgames.com/showthread.php?t=45704