VIA Rail's GE P42's have never seen the world east, north, west of the Corridor, they never will, Winnipeg and Vancouver shops are not GE-friendly, and they are to be retired with the Charger/Venture sets. Several already have. The standard loco outside the corridor until 2035 will be the EMD F40, rebuilt for at least the 2nd time. Beyond 2035, who knows, probably a freight loco knock off. I don't see them depending on any sort of Charger in the middle of nowhere, especially where the temperature is -40C/F, and not with what everyone is going through with them.
I am on a Canadian e-mail group; I mostly just observe. One of their Venture trains breaks down on average every couple of days and they have yet to figure out how to MU them without the computers going nuts. So no Ottawa/Montreal "J" trains as long as that goes on, which would also solve the axle count issue west of Brockville. IMHO, Chargers are junk.
As for the 3rd Hiawtha set when the Borialis started, they abolished it. I don't know what they did to the schedules, though they have some very tight relays, some as little as a half hour. Maybe that is how they will scape up Mobile equipment.