Originally Posted by
RatherBeInYOW
I am guessing that dual-purposing the D to F/E corridor would require more renovation as they'd need to have some sort of controlled way of funnelling people back that way from E and F gates through CSBA. The F/E end of that corridor is already a gong show as it is, requiring half a dozen YYZ employees directing traffic and scanning boarding passes.
Tri-purpose. It also funnels people in from the US arriving at the hermaphrodite gates into customs. Quad purpose, it also directs people from T1 dom (and US) to T3, but that isn't an additional security layer mix.
Anyway, I don't think they will get rid of the buses until they can ditch the hermaphrodite gates, which implies the massive construction of Concourse & Pier H. The master plan has H at "Short-to-Medium-Term"