Just noticed these really high res overhead maps on AOStratics from Dai-Galean. They're great if you want to understand how the jigsaw fits together.
Warning: These are very high res, if you are on a modem expect a long download.
Clan: 5.4Mb
http://ao.stratics.com/content/maps/maps_large.jpg
Omni: 2.2Mb
http://ao.stratics.com/content/maps/mapsPart2_large.jpg
AOStratics is here http://ao.stratics.com/