Some minor information in the "The Goblin" addon is wrong. The discovery year should be 2015 and the object should be classified as an Asteroid rather than DwarfPlanet. Hopefully you could fix that.

It would be interesting if accretion disk shapes of black holes, neutron stars, and white dwarfs could vary. Maybe it could be a toroidal disk of material around the object, somewhat like a debris disk.

Would it be possible to recreate chaotic rotations of certain satellites such as Hyperion and Hydra?