[left of center]

I hope the Loop retains as much office space as possible. The city's rail infrastructure is literally built to move the city's population in and out of the Loop. CTA and Metra work best with the Loop remaining a big employment center.

Streeterville is not nearly as easy to get to, especially from the suburbs. I would wager a larger percentage of workers drive to their offices there vs. the Loop. It would probably be better from a city planning standpoint to have older offices there converted to residential than east Loop office buildings, for instance.