I know that perfectly well. My point is that it was fan reaction that made Spock the breakout character. Once the network saw how hugely popular Spock was with the fans, then of course they dropped their resistance. Just because Roddenberry insisted on keeping the character, that doesn't mean that he was always meant to be the central character. It just means that Roddenberry didn't want to give up on having an alien character in his show set in outer space. He wanted that alien to be an important part of the show, but not the core of the show. Said memo was issued after the pitch document I mentioned before, which is dated March 11, 1964 and already includes the entire cast I listed above. Therefore, it does not reveal anything whatsoever about the order in which the characters were created. I think everyone knows that Number One was written for Majel, but that tells us nothing about when the character was created relative to the others, or when Spock was created. That's a better way of putting it. As I said, that's certainly what the network and the fans wanted. But there was always an effort made (by the producers and definitely by Shatner) to ensure that Kirk remained on a par with Spock. I'd say Spock became more "the de facto star" than "the main character" per se.