Ok, hear me out. Take Salesforce tower and convert the floors into shopping/office/restaurant/apartments. One building that I would never have to leave unless I wanted to. I think that would be awesome.
You've exactly described the plan for Marina City in Chicago circa 1963.
https://en.wikipedia.org/wiki/Marina_City This is fitting because downtown Chicago was considered undesirable to live in then.
oh, i wish they did that. That area turned out nice and bright, nice to walk by. But somehow it's a dead desert. The massive bus terminal seems empty most of the time. Even the not-nearly-as-grandiose caltrain station has more life around it.