The two ceremonies worked well as a pair. I enjoyed the Danny Boyle effort, but I was left feeling that it suffered from 'Jerusalem Syndrome'. There aren't any Satanic Mills left, except as tourist attractions, and 'Was Jerusalem founded here, among these light industrial units and highly-automated distribution facilities ?' wasn't going to be articulated.
I liked the trucks, cars, taxis and indeed bicycles of the closing ceremony for that reason, it was about the present, not about a dismal past which justifies a dream of a perfect future.
I liked the 'Imagine' segment, people of all nations and religions had been competeing against each other, yet most of their time was spent just being with each other, so I liked the apparent contradiction of the idea of no countries and no religion too. It's the barriers between countries that forms the basis of the Olympics, but it's an experience which breaks down those barriers.
I also liked Ed Sheeran doing 'Wish You Were Here', and who were those Ukrainian girls doing an impromptu dance number? They looked fun.