A really interesting article, and though I was acquainted with most of the information in it, it has some insights I hadn't been aware of before. Particularly, I like the way it summarizes just how extensively Roddenberry worked to create the image of himself as a visionary auteur, and how much Paramount was compelled to play into his popularity with fandom even though he probably wasn't the best person to be in charge. It seems that with both the movies and TNG, they started off with Roddenberry to appease fandom and then tried to phase him out gently but swiftly.
I did catch one factual error. It says on p. 65 that "There was never a female guest star that played a character higher in rank than Lieutenant in Starfleet," but there was exactly one: Diana Muldaur as Lt. Cmdr. Anne Mulhall in "Return to Tomorrow."