I like that thing you wrote about him being too serious
It shows when he won the ELC. He was celebrating it like a european cup final. He just freaking love to win.
His criticism towards players is a really good thing. I'm not sure if he's less critical these days, but he just hates people who tries to sit on top of him. And as you say, he's the same towards himself. I fear the day when he will throw in the towel because he comes to terms with his age or something stupid like that. I think a lot of his age refusal is a mental thing. He loves football and want to be the best at it. He cannot let a thing like age change that. Probably dead determined to prove everyone wrong and is over performing because of that.
He makes a lot of small gestures to show authority despite not wearing the armband. I'm thinking about these things like walking out last and keeping his distance sort of like leading a bunch of boys. I also see it when he or a team mate scores. There's always some pep talk and "well done son" paths on head and back - arms around 3-4 guys when hugging. It will work with this bunch of boys, but no way would it work with the likes of Ronaldo.