I always thought this was a corridor where VIA actually got most of the ridership already with London to Toronto via Brantford/Hamilton. I have family who would take the train from Hamilton (ok, Aldershot obviously) to London for commuting, and as a corridor it generally seems to have the superior bones to operate a service like what GO wants. Way closer to road travel times and more direct for TO-London anyway.
I would understand if Metrolinx was trying to start a non-Toronto centered service here (‘it’s about London-KW/Guelph, not London-TO!’) but that’s not what they made possible because it was political. I think eventually GO will be in charge of both (HFR and Metrolinx’s evergrowing mandate will phase VIA out in S.ON someday if it doesn’t reinvent itself), but it would be nice if they admitted what that looks like. Either there’s a basis to justify serving London today, perhaps by taking over VIA services in the near term, or it involves a lot of work and needs to be pushed off regardless of the corridor chosen.
Altogether, this was a poor experiment to evaluate any conceptual viability. while it was a top-down decision, Metrolinx could have made a point from the outset to actively learn something. They might have done that, but I doubt it knowing Metrolinx.
Oh, and the renaming of Brampton GO is silly. I get wanting to update nomenclature (there’s a lot of stations in Brampton now, so ‘Brampton GO’ isn’t super clear that it’s downtown) but the chosen name is far too long. Downtown Brampton GO or something like it would go a lot further without disregarding what makes the current name so useful and significant.