[Twan]

To have the new map with a different name, you have to change the line where the tga is called in the beginning of the .map file :

-- Title and image file
#dom2title World of Geometry
#imagefile worldofgeometry.tga <--- here the 2

About starting realms, all players normally should have a net of 12 or 13 provinces (capitol + 11 or 12) without special garrisons (land players with 13 get a little less population in the starting area). But of course in some directions they encounter garrisons fast (capitols are 6 to 7 provinces away from each other, and there is always a garrison of worshipers of enslaved gods between them)