Ring harvesting does technically work, but ever since orbits were changed to have axial tilt, it seems the harvest "target" wasn't updated to also follow the tilt, so you'll notice the crew attempt to harvest very far away from where the actual target is, and constantly get 0 due to being out of range
Bug report about that here: http://hazeron.com/mybb/showthread.php?tid=2200
Bug report about that here: http://hazeron.com/mybb/showthread.php?tid=2200
What even