the most worrisome blow by far is a scathing verdict on Los Angeles’s civic health that was delivered in a one-two punch — the second on Wednesday — by a committee of lawyers, developers, labor leaders and former elected officials who make up something of the Old Guard here. The Los Angeles 2020 Commission presented a catalog of failings that it said were a unique burden to the city: widespread poverty and job stagnation, huge municipal pension obligations, a struggling port and tourism industry and paralyzing traffic that would not be eased even with a continuing multibillion-dollar mass transit initiative.