Yes, you're right. The Blood and Fire script was written for the original series and was never filmed. It sat around until the Phase II series started.
Some of my favorite sci-fi is gay oriented and while I am not a fantasy reader, I am very aware of how prominent gay characters are there. Marion Zimmer Bradley, who wrote some of the best fantasy ever, also wrote some of the best gay fiction going, did you ever read "The Catch Trap." It's the best gay love story I ever read, set in a circus, and when I was a younger man made me long for that strong, equal partner. I don't know how many times I've gone back and read it. It took "Front Runner" the step forward it needed. Isn't it strange, in the 60's, 70's - the best gay romance was written by women: Bradley, Mary Rennault (Persian Boy, The Charioteer, Mask of Apollo), and Patricia Nell Warren (Front Runner, Harlan's Race, Billy's Boy). Men were writing that wonderful gay detective fiction: Joseph Hansen (David Bandstetter novels), George Baxt (Pharoah Love novels). It seems so strange now with over a hundred truly brilliant gay writers in all genres who publish material that crosses over into every demographic. If I could write a short story like David Leavitt or poetry like Paul Monette or sharp, witty humor laced with time and place like Armistead Maupin or history like Martin Duberman or mystery like Nava or Zubro or fiction like Picano or Rechy or Mordden - well you get the idea - I wouldn't have to read so much.