Option 5 avoids the need for travellers from the business park to travel one stop, then transfer to the subway as per Option 3; given that, it is seen as a more effective catalyst for more dense, transit-oriented development in the area of the station. This option, however, is much more expensive than Option 3 and requires more detailed design work to determine if a "shallow" subway extension is achievable. More work is required to determine the depth needed to avoid the settlement near the Highway 404 bridge and to avoid the large, sanitary sewer near Consumers Road.