None of which will happen on the Richmond Hill line because of it's multitude of complications.AFAIR the GO-RER in the document was essentially as envisioned prior to SmartTrack. It assumed no fare integration, minimal to no bus integration, no additional 416 stations, ~10 minute peak frequencies (including additional upgrades to the Richmond Hill line), no straightening of Richmond Hill.
It's shouldn't have been a surprise that with that specific configuration showed few passengers transferring from TTC.
A GO Expansion with a stations at most major streets (Steeles, Finch, York Mills, Lawrence, Eglinton, ...), TTC bus connections, full fare integration (free transfers @ roughly $150M/year subsidy; less than the Ford subway plan will require in additional subsidy), and 5 to 7 minute all day frequencies would likely have different results with the same modelling program.
And if we did invest the billions to rebuild the RH GO into an RER service, it would be an even more epic waste of money than the Scarborough subway.
Better to just use the money on a proper Relief Line.