The Mumbai Film Festival has the parts that its organisers need to make the show a big deal on the international film circuit: appearances by world-class directors such as Costa-Gavras and Oliver Stone, screenings of films like “The Social Network” and “The Fifth Estate,” and the backdrop of a city that is home to the world’s largest movie production business.¬†And yet, it isn’t enough. Festival director Srinivasan Narayanan spoke to Reuters about his roadmap for the festival and the hurdles in his path.