Struass should have been kept out of the film.
The movie was good but not excellent. As per Nolan, it's his one of great works but there were a lot of things which were plain boring for me.
The scenes were good, the cinematography was good and change in color of film to showcase different times was a good move. There were really great things which i loved to see and there were a few which was new to my learning, like Japan was about to surrender but fat boy was dropped because they wanted to see it's real results and that first ever test was done on the surface, not below the ground.
The film started boring when after the test, Struass thing was going on. It was relevant i know, but totally boring and should have been kept out of the film or at least short. It was stretched far too much to make the whole film become pale and boring.