Sure, absolutely.
Of course, when you look to the west of the city, there's green or agricultural space and it seems obvious. It is very much about sequencing and managing traffic. We use Transport Canada's approved design criteria, internationally used design criteria, so there are a lot of standards that are applied in terms of designing airspace, which is a key piece.
To the question of why it can't just be shifted further west, that goes to timing. What controllers do is turn the aircraft toward the runway for final approach. They have to get to a place where they can line up with the runway to land. If you put that down too far from the airport, it's hard for the air traffic controller to do the timing.