It doesn't really matter how many times you've explained your line. It doesn't change the fact that it's quite possibly the worst conceived relief line in the history of Toronto Transit!
Okay, we get that you don't like his fantasy map DRL alignment but there's already a couple dozen pages of discussion about that in two other threads.
There are endless variations. But point one to a single official example from this decade that has all the tube lines and doesn't include the London Overground!
The London Overground is grade-separated transit for all practical purposes.
Toronto's current subway map already shows non-grade separated lines.
Until the airport rocket is added, which lines are these?
Key words. "rapid transit map". Spadina isn't rapid. Nor is St. Clair which now has a slower scheduled time than it did before they started the conversion. The airport bus on the other hand is rapid, with a higher average speed of any of the subway lines.
The term "rapid transit" doesn't mean just "public transit that is fast". It is transit that
1) doesn't have to deal with traffic in its own direction (no congestion, i.e. ROW)
2) is high capacity and frequent
3) doesn't have to deal with intersecting traffic (although that part is muddied by terms BRT and LRT, which have priority instead of full grade separation).
I think that there is a confusion here about basic definitions.
From the dictionary
Rapid transit: a system of rail transit within an urban area that has exclusive right of way either below, above, or on the ground and so is capable of relatively high operating speed.
From wikipedia:
Grade separation:Grade separation is the method of aligning a junction of two or more surface transport axes at different heights (grades) so that they will not disrupt the traffic flow on other transit routes when they cross each other.