I imagine a Canadian Tire would do good business there, aside from the automotive side. Actually, it's not so much Canadian Tire as such, but the general hardware side of things that would be helpful. A good Home Hardware store would be even better.
It would be interesting if one of the spans of the Gardiner was preserved and erected it vertically as a monument to the 50 year old infrastructure. It would be both impressive and tactile, providing a new prespective for a Toronto icon.