Fun bit of info I found out a few days ago while searching outside the game.
There's an unused Black Space 2 room called Other Othermart that would apparently have been accessed through a now dummied out door in the Weathervane Island room. It's a version of Othermart with a slightly different layout, and that's all there is too it. I wish they kept this location in as is, even if the design's probably a relic of an older version of Othermart. I feel like it would have been interesting to find this very real world location here in Black Space almost untouched, but not quite.