Good luck finding anyone in SF who wants to replace open space with more density. SF is amazingly lucky that it has so much green space and it's a big reason the city is so desirable. Increasing sprawl into our open spaces seems like a really bad idea to me (and I assume most people who live in SF). You could argue we should replace golfing with other green-space uses, and I'm sure you'd find takers, but for more sprawl? I doubt it.

Also I never understood this obsession with "heritage". Why not promote the next generation of SF architecture instead? Modernize the victorian into increased density, create something new and creative. Over time blend the new-ness with the old. This ideology of stasis seems at-odds with SF's image as an innovation hub, both technologically and culturally. Why should our architecture be stagnant when our ethos is to constantly push forward?

This is one of the big loses we've had to NIMBYism / prop 13 / regressive zoning. We could have such cool, interesting architectural advances, but ironically our perverse urban development incentive structure discourages those kinds of innovations.