The music cues of Starbase 80 are reminiscent of those from horror movies.

I think they are a specific reference to James Horner’s score in WoK, specifically the part when the Enterprise crew boards Regula I to find the crew slaughtered by Khan. Even the lighting and angles of the exterior shots are similar to that part of the movie (or at least they seem to me).

Worf insists that the truth about the cloned Kahless be revealed to the people at the end of “Rightful Heir”, so I assume that info was part of the press release when Kahless was crowned.