I struggle with React-Router and its nested routes concept. That's why I put visibility logic of dump components into smart components. URLs can contain some app state too. To me, it's difficult to maintain state in Routes and Stores.
On MobX docu router is only mentioned but never shown.
What do you think about UI Routing? Is it time to move on and keep all the state where it belongs to, in a state machine/state manager like MobX/Redux?