^Yeah, I'd like to see that, too.
I've got a pretty big project for you. This is my 'plan' for a new market square.

Imagine Jackson Square plaza being at street level and not raised above the street as it is now.
The blue lines denote through streets - Market street running east-west and Park street running north-south. The red hash lines denote pedestrian streets running from King into the square.
The part of Jackson Square located directly under Stelco Tower, Thomson, the Sheraton, etc. would be gutted-out and redesigned to be accessible from the street - Market street and King street in this case.
There would be a large square located behind the library/ market, with residential located along Park beside Copps and anywhere else it can be jammed in.
It might be hard for others to conceptualise. Imagine something vaguely similar to Quincy Market in Boston...but new.