Thank you for the very informative post about what has been delayed for the immediate future, and I think that you have provided a great deal of insight into some of the reason why GO is only marginally more of a viable urban connector this decade than 2 or 6 decades previous. However, I am going to be that forumer and point out again that I am observing that GO has not had reasonably steady progress, with regards to: dedicated trackage, track duplication, level boarding, station amenities, TOD, electrification, above all - regular 2WAD services, everything, really. Rather, the progress that it is happening of late doesn't make up for Toronto's 120 year long rail history.
All these years later in 2018, GO is still attempting to impress upon stations built in dirt fields, surrounded by nothing but giant parking lots, single track extensions with peak period-only service hauled by diesel locomotives into the distant future for some reason despite Ontario's cheap and clean hydroelectricity (it is, by global standards, still very cheap), and I am saying that I don't think it has to be this way. What I have noticed is that there tend to be two types of forumers, the idealist ones like myself (i.e. "Why do most wealthy overseas cities have train systems that make ours look like crap? Let's build ours better now - here's how!") and the well-informed ones who reverse-engineer the current situation to try to make sense of it (i.e. "Toronto is built on a unique combination of silty sand and bedrock that *no* other city has ever had to deal with! No government could ever have conceived of legislating a better deal with CN and CP or providing adequate transit funding because there are so many systems in place etc etc!").
As for the aforementioned plans to run GO trains to Cherry St or Exhibition, that's really not at all the same as say, making the Stouffville-Milton Line, or the Barrie-Lakeshore East Line. How this would be achieved is up for debate, but essentially running regular services from end-to-end and interlining based on a logical pattern is reasonable. What would also be reasonable would be to have all stations in trunk sections being served regularly by multiple services, or to have a nearby transfer station that is actually useful to a passenger and doesn't require them to backtrack. It boggles my mind why not all Stouffville trains stop at at least one of Scarborough or Danforth stations, because someone from Oshawa should be able to work in Markham or shop at the Pacific Mall, considering there are train stations in all three locations. I think a good example of the above from a less-populated, less-dense city than Toronto is the Melbourne system, so I'm attaching a map of it (purple lines are regional services) to this post for reference.
So I don't think I'm kidding myself when I say that past intentions for GO have amounted to very little, and that disproportionately significant, concrete changes are happening now because the old guard that held us back for so long is just beginning to die out, figuratively speaking. I certainly never said I think Verster is a messiah, I only commented that he amounts to fresh blood at the top of a historically conservative organization.
View attachment 138822