I have a feature add request (i.e. a body addition).
I'd like to add the real life asteroid Bennu.
The OSIRIS-REx team just published a beautiful mosaic photo of Bennu that is already in polar coordinate.
I can provide a real 3rd model - data taken by the OSIRIS-REx spacecraft and published on asteroidmission.org, and real orbital data (provided by JPL, updated by OSIRIS-REx). I have tried on my own to do this, but only gotten so far as to get all the orbital parameters correct, zero success in decoding the voodoo of puting heightmaps together or texturing (I am not a photoshop person, been trying to do this with GIMP/Paint.NET/Photofiltre..... obviously there are some secrets to using those tools not shared.)
Photo mosaic of Bennu:
https://www.asteroidmission.org/bennu_global_mosaic/
Complete height data as 0.75m lidar data (OBJ and STL format - not really "map" ready these have been tailored to 3d printing a scale model):
https://www.asteroidmission.org/updated-bennu-shape-model-3d-files/
Latest (or most precise - most decimal points) orbital & physical data:
https://ssd.jpl.nasa.gov/sbdb.cgi#top (search for "bennu" in the search box, no direct linking)
I spent 4 or 5 days on this and am frustrated, time to just call in the pros.