Making a film is so hard that if you don't have your main actors going along with the ride with the rest of the crew it can make your life very difficult.
Gareth [Edwards] was very open to just shaping the performances and the scenes to fit what was happening with the actors and the storytelling that was emerging.
Are you genuine? Or just an actor? A representative? Or what it is that is represented?-In the end, you might merely be someone mimicking an actor ... Second question of conscience.