I was hoping to use DS9 as a backdrop for this story. Building a set from scratch using the outdoor lighting is not a problem, but I have significant issues with cardassian set pieces. Federation pieces are a lot easier to work with. A change is all that is needed.
By "backdrop" do you mean the set? You can use a different Cardassian interior and simply say it's a different deck than the main promenade. IIRC, there's one named "Trivas Empok Nor". Empok Nor was a space station of the same design as DS9(aka Terok Nor) that the Cardassians built in the Trivas system. There's probably a few Cardassian interiors.
I'll have to play around with everyone's ideas. It just can't be a truly psychological thriller with smiles and sunshine.
One thing that I've found recently. I'm working on building a custom interior in the space above the Starbase 39 interior at a height of about 50, and the lighting is very dark. I think I have it set to the DS9 interior backdrop.
Might be an option for you.
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