this mod would be an alter net reality where there are no protectors never came to be and a war breaks out between humans and apex,glitch and avail,hylotl and floran as a few out comes. you can only have a race based crew. the mod should have tanks,mechs,heil and planes more turrets types and armor and weapons. the more planets you clam for your race you can choose what you what is to be used for such as army base ,mine or a colony. they can be invaded by other races and you can invade them but they will build defenses that you need to break through. to clam there planets you have to build an attack force capture points to take over the planet
http://community.playstarbound.com/resources/unofficial-modding-ebook-2-0.2930/ Best place to start learning. And if you plan on doing turrets, you will need to know Lua as well.