why not make custom city, yes CITY... wipe everything from worldmap, and make 10x10 squares, and center of it would be a green "town" dot... which for example would be Las Vegas or Los Angeles or San Francisco (not the ones from original game).. and they would be so huge that youd have to walk 30 mins to get to another map's end....
but if seriosly. wipe bases and tents.... add personal houses! (0,5% that someone with high outdoorsman will find it.)