High-Speed Rail (HSR) - Toronto/Pearson/Kitchener/London

[tomh009]

Are significantly more people travelling to and from TOR to MTL vs TOR/GTA out west to KWC and London?

There is a good argument that Oshawa -- TOR -- KW -- Lon solves daily commuter issues and makes london toronto daily commute viable if under 1.5hrs

You would be unlikely to get GO-level frequency from high-speed rail, at least for many years. So, GO would provide frequency--and if the tracks/crossings are improved, also much-improved speed, as the GO MP54 engines are already capable of 180 km/h top speed.