just to clear a few things, some people don't know the whole concept.
as far as the HQ's go, those real light areas in the corners are going to be full of mountians. not easy to navigate and almost impossible to go NOE to an HQ. the HQ's are on the low area so if an enemy does get that close, and has that CV they can actually shell the HQ instead of just bombing it... but by that point the country probably lost the map anyway. basically the only way to get to the HQ is right up through the center gut of the country.
as for the center, in 11 sectors basically (taking away the center GV island) there are 15 air bases. 6 of them CV's so they are movable. thats alot of bang for your buck i think. there should always be fights in that area, or at least that is my hope.
oh well, it is going to be a few months before i have anything resembeling a real map, so who knows what might have to change. this is just the spawn point.