I've been calling for Metrolinx to provide adequate links to their other mobility hubs/bus terminals within Toronto regardless of if the TTC serves the locale or not. Routes from Kipling to STC, Highway 407 Station, and Finch for example would be immensely beneficial as they would significantly reduce commute times.
If one were to travel from Kipling to Finch via the subway takes at least 1 hour and 15 mins, while a trip from Kipling to STC takes at least 1 hour and 30 mins. Those same trips would easily be cut down in half if GO served these stations.