How about developing a city within the city at NorthPark Mall? When I grew up in the Chicago area we had a mall - Oakbrook Mall that was an outdoor mall with ponds and bridges, shade trees, and benches. That mall remains popular today.
Redevelop a few of the big box stores into condos or apartments. Take off the roof and take out a few of the stores here and there. Have a central park area with trees and greenery. Add a grocery store/pharmacy, a medical clinic, a satellite post office, and a dog park.
Barbara A. Foster