Considering Inception is not about those background characters , and its a typical derivate genre movie...there's nothing wrong with it. The catharsis of scarecrow is well played , and cobb's relationship is beautifully developed. They move the plot forward and their actions are related to their basic archetypes characterizations. No unnecessary development time spent on unnecessary characters motivations. Cinema is not a booklet of rules. To me it's bizarre criticizing a movie about aspects that the story doesn't want to rely on. In that sense , and considering the choices made , i think Gotham was handled perfectly . The last thing this movie needed was common citizens or political mumbo jumbo. The important thing is the social context , and how that is utilized by the antagonist .