It will become more apparent as time passes.
I can't say no straight lines, but I can say few straight lines.
Basically don't do this id:2483916
Also, try to smooth up your biome types. The thing that deters most players from joining wides is bad mapwork. Make the borders between land types more natural and winding, and make them smoothly come together with no straight lines.
I'm sure they find new tech after leaving the bunkers, and get an upgrade, except for my nation, we are isolated in the mountains, also, your bunker is the blue shield I have dubbed "New Trium" .
Like whatever was salvaged by the survivors before the world went up in flames
Oooh you could go for some sort of Nausicaa style steampunk technologies left over from the apocalypse
Haha, but they'll never reach the level of Jose.Martinez.2004 players