[the urban politician]

^ I agree, the CBD will still migrate west, but this development will at least continue to make the central Loop viable as a place to locate an office. It will give it a key advantage.

Companies do often cite proximity to O'Hare as a reason to locate here. With B37 being 12 minutes to the airport, you suddenly have a location downtown that is just as close to O'Hare as anything out in Rosemont or Elk Grove Village, etc--without the hassle of parking or dealing with TSA once you've arrived. There are also some industries, like Management Consulting, where employees literally fly to their clients every week.

So at least for some industries, this location may be appealing.