The main east-west subway line (Bloor street line) is already crowded.  It would make more sense to extend the Sheppard Avenue subway eastward across to the Agincourt Go Station as part of a new east-west transit solution.  The Agincourt Go Station rail line right-of-way could be used as the basis for a new north-south transit solution.  Just a bit east of the Agincourt Go Station is a collection of derelict and under-utilized properties that might also be useful to a transit project.