Another possibility besides having 1 object for the whole field is to break it up into parts, such as 6 separate fields. Each would represent one sixth of the complete ring. They could use the same base model(s), but rotated to the appropriate angle. This would allow multiple ships to mine the ring, as well as multiple planets to be constructed, without going overboard like in FQM SE4.
BM:
The actual object would always be located at the same place, such as the "top" of the ring (according to hex coordinates). There would probably be some sort of super-asteroid or other marker to indicate this position. The model/animation would then be offset to appear centralized in the system.
SJ:
Are you volunteering?
