The annual Tribeca Film Festival (TFF) has become one of the industry’s great success stories. Born of the 9/11 tragedy that struck near New York’s Tribeca neighborhood at the Twin Towers, the inaugural event launched only months after the attack. Having just completed its 11th installment on April 29, the festival, with deep-pocked sponsors galore including founding sponsor American Express, enjoys its rep as one of the world’s must-attend film events for both fans and professionals.Beyond the fest have grown the activities and operations of Tribeca Enterprises, the Tribeca Institute, and distributor Tribeca Film. The fest too has greatly expanded its offerings (panels, street fairs, Apple Store events, etc.) but not so the number of features. TFF has become much more selective in recent years, and the 2012 event offered an especially strong lineup of 89 features.TFF’s new programming team chose from over 3,000 long-form submissions, a record. There was also a record number of world premieres, though a number of the films were cherry-picked from previous events like Toronto, Sundance and Berlin. But the real story of this year’s event was “story” itself—the importance of narrative in many of the selections, and even how one film’s story grew more…