Atheorhaven: Don't shoot me, but that worldship reminded me of Starship Troopers.
Dump the upper ring and keep the horizontal, add more greebles for turrets and ship berths and put it around the moon. The Dark side faces us all the time so if you keep the level ring it should wobble a bit and still cover almost all the areas needed for Earth.
Add more high-res textures and BAM SST Moon defense ring. FTW!!!
Sorry I couldn't help myself!