Michael does mention Allie boy in an interview. He mentions him when speaking about carmine and sonnys overall goal for them and the future of the family. Michael says it had been talked about by carmine and sonny and elevating them both to capos was purposely because they wanted them to end up as michael says"boss, underboss or vice versa). I liked it because he was trying to keep his dad in such a high regard as if he had so much pull Then that carmine might even entertain the idea of Michael running the family over Allie boy.