On Friday I drove from London to Niagara Falls. The backup on the Linc and RHVP in the other direction was insane. On my way back, I took backroads to avoid the congestion (20/65/6).
If no Mid-Pen highway is built, I'd like to see the Linc extended east to the 406, and the 420 extended west to... the 406. That would essentially create some relief to the QEW above the escarpment.
Quick map: