[mikk0j]

There's tons of space to do this in without compromising the quality of the city. Bayview and south from there, all the way to South San Francisco where there is tons of undeveloped space, and where the combination of new large developments with high-speed commuter rail (i.e. modern fast BART, with a couple of branching lines - CalTrain is decades past prime) could end up being cheaper and faster to build. It doesn't have to be the heart of the city, nor does it have to be the suburban sprawl you commute to/from +2hrs per day. It should be a menu of options.