Godfather Part 2 Ending

Did anyone notice Michael's face when the camera zoomed in? Half of his face was covered by shadow...does that mean something about his character? I feel like he's always in his "family business" mode. We all know that everyone compares him to his father, but times have changed. And although Michael tries his best to provide for his family, he never spends time with either of his kids. Perhaps he thought he had time to fix everything with his family, but the damage is already done.