As the New York Philharmonic begins looking for a successor to Lorin Maazel, the orchestra ought to be thinking about getting a leader who will participate more in its community. “The debate about the future of classical music and the role of the symphony orchestra goes on across the country, but the Philharmonic under Mr. Maazel is not part of the conversation. Despite the problems facing orchestras, there are real success stories and encouraging news to report. But is anyone looking to the Philharmonic for answers?”