Hi, you may also want to try the map editor that comes with patch 1.3. It's not for the faint of heart, but from reading this thread I suspect that's what you guys like!
http://forum.paradoxplaza.com/forum/showthread.php?t=466281
Cheers,
Mattias
http://forum.paradoxplaza.com/forum/showthread.php?t=466281
Cheers,
Mattias