From what I've read, DS9 was heavily based on the Babylon 5 Bible which was pitched by JMS to Paramount years before. You might charitably say DS9 was the Guix

From what I've read, DS9 was heavily based on the Babylon 5 Bible which was pitched by JMS to Paramount years before. You might charitably say DS9 was the Guix to the Nix of Babylon 5: Same core ideas mapped onto different story universes. The earlier B5 Bible apparently even had a changeling security officer which evolved into the "changeling net" plot shown in the pilot episode.