You can do both. Manhattanization is perhaps bad, but low-mid rise, Brooklynization or Barcelonazation or even Missionization of more of the city would help vas

You can do both. Manhattanization is perhaps bad, but low-mid rise, Brooklynization or Barcelonazation or even Missionization of more of the city would help vastly. The highest population density parts of SF are Mission and Haight and similar midrise mixed use areas, they're significantly denser (50-100% more) than Richmond and Sunset. Imagine fitting an extra 100K people without adding any buildings higher than 3 stories.