I was just curious on the speed improvement really, I doubt VIA would convert to Class 6. They most likely would fix the track to at least Class 4 though
Absolutely you have to allow for CN trains, but there are something like 2 trains a day at most on that line. Thats why CN doesnt want to put the money into fixing it.
Furthermore, if VIA owns the line, they get priority. Freight has to wait for VIA, not the other way around.
Even furthermore, if VIA could get a good speed on the GEXR line, they would most likely move some of their Windsor - London - Toronto trains onto it and off the CN mainline.
This would provide more ridership through the KW area, and would mean they could stop paying CN so much for their mainline rights.
Currently there are 5 trains a day from London on the CN mainline 1 on GEXR. I would imagine they could split it 3 and 3, and maybe add a 2nd Sarnia train as well.