On a side note, I'm interested as to where Roddenberry may have gotten the name for Mr. Spock. About the time that Roddenberry was first pitching Star Trek, the first novel of Jack Vance's "Demon Princes" space opera series came out. In that book, "The Star King", one of the major villians is hiding out and using the alias of "Mr. Spock". I'm just curious as to whether Roddenberry ever read that space opera novel, or if it is just a coincidence.
Almost surely a coincidence. I don't think Roddenberry was especially well-read in science fiction. He'd never heard of Benjamin Spock, the famous baby doctor, either. He just picked a name that he thought had a strong sound.
In "The Making of Star Trek" Stephen Whitfield recounted that GR's original thought was to have Vulcan names start with SP and end with a K. This led to a hilarious memo war between GR and the rest of the command team about suggested names. I won't recount it here, but it was a good example of how creative people in a pressure cooker environment blow off steam.