Part of that mall needs to be torn down and rebuilt in a smaller area with 2/3 floors, as well some green space.
The first area to be done is between Target and Sears, as that is a dead zone.
They should have left the original expansion to west along as that is another dead area now. Not sure if Johnny Rocket's is history, but it's close now.
With the dollar store and furniture vacant now, it will allow relocation of various store to take place to allow construction/expansion in other place.
The last expansion/redo was only a patch work from point of view and a miss opportune to fix a lot of mistakes when the mall was first built. The ceiling on the lower level is too low as well part of the upper one.
The city would like to see this mall cut up with the anchor stores being separate from the main mall to get more streets into this area.
Its time to rethink about moving this mall from what it is today to a 7/24 community to the point you put development above the mall and add more entertainment to it as well other activities that can be used at all hours of the day.
Its also time to put parking underground as well reduce the parking space.
I was in Erin Mills a few days ago and its still a dead mall at busy times and surprise it still a live. Zellers was still open which was a surprise to me. Then its only in a blue moon for me to go there in the first place let alone Sq One these days.