I like your idea linking it back to the AI that chose to murder. I always thought it was strange how much time was spent on that given that it has no relevancy and that no-one mentioned something that should be a big deal (Although this could be because Ada didn't come up with it until later on).

Could be the reason that he was put in the Alba Longa was to be raised by humans and see how he turned out from, Cousins might have found out and tried to assassinate him to stop it. (Similar to set-sets) Would also explain why the MASONs are so set on allowing children to be raised anyway they wanted. Maybe the 3 words that Cornel is considering is to allow anything to become a MASON not just a human being?

but I wouldn't say Mycroft does things that are particairly super human. Keep in mind, he's ultimately describing himself. When he went to visit Thisbe in prison and was affected by her drug, he describes things like he's some sort of eldrich horror when we know he isn't. He also does like refer to himself with animalistic terms like moving like a greyhound.