Why not just leave San Francisco basically as it is? The city works okay right now. You can get around it reasonably well.<p>Housing and transport are only a problem if you&#x27;re going to keep trying to cram more people in there. That&#x27;s silly.<p>Part of what makes San Francisco one of the USA&#x27;s most appealing cities is that it <i>hasn&#x27;t</i> expanded all that much in the last eighty years or so -- due to its unique geography which prevents outward expansion. (The population in 1930 was 634,000, in 2010 it was 805,000.)