Downtown boosters recently conducted a major study of the 16th Street Mall, which turns thirty next year, trying to determine what directional changes it needed to truly be a pedestrian paradise. Their conclusion? If it ain't broke, don't fix it. So beyond getting some basic repair work and a general sprucing up, the 16th Street Mall will carry on as it has for almost three decades, a mile-plus artery stretching through downtown that's an ideal place to stroll, window-shop for bad Colorado souvenirs made in China, and watch all kinds of people — from punks to businesspeople to buskers to tourists amazed by the bustle, some good, some bad, all lively. That's what you get at the heart of a vibrant city.