There was almost no action but only dialogues and drama and it was glorious 50 minutes. They nailed Mark's PTSD, and opening scene was much more fleshed out and probable therefore more impactful than in comics. Thragg's appearance has also vastly benefited from all those additional scenes. Mark's choice cements him as a full blooded person, rather than just another god superhero.
All Nolan's scenes were great. He has clearly changed and regrets his choices, but also still selfishly wants forgiveness. He seems not to grasp how much death and suffering has he caused among common people, but at least he is on a good path.