Hi folks
I'm not sure how many are familiar with Larry Niven's Scifi novels of Known Space and in particular the books about the Ringworld.
"The Ringworld is an artificial ring constructed by a highly advanced alien race ,about one million miles wide and approximately the diameter of Earth's orbit (which makes it about 600 million miles in circumference), encircling a sunlike star. It rotates, providing artificial gravity that is 99.2% as strong as Earth's gravity through the action of centrifugal force. The ringworld has a habitable, flat inner surface equivalent in area to approximately three million Earth-sized planets."http://en.wikipedia.org/wiki/Ringworld#Concepts
Niven's idea is that if you could harvest all the material of a solar system much like ours, all the planets, moons, asteroids and gas giants, you should roughly enough material to construct such a ring around the sun, in the Goldilock Zone( habitable zone). That would mean a massive amount of habitable land and large population boom.
I think it would be fun to see such a megastructure in the new game, crazy expensive to build, but equally crazy amount of tax revenue when you get it populated 
What do you think?