Wouldn't surprise me if they cheap out and go with an east/west "annex" option:
Instead of under, the annex concourses would be above the tracks. The SkyWalk incorporated into the west annex and the CIBC Square park connected to the east annex.
Probably easier to do cut and cover than elevated, given "Bathurst North" and Sheppard West line 4 platforms will most likely be underground. The transition from underground to elevated will take up couple hundred metres between the two stations.
They do have PSDs at shinkansen platforms, perhaps not network-wide.
https://commons.wikimedia.org/wiki/Category:Platforms_of_Tokyo_Station_(T%C5%8Dkaid%C5%8D_Shinkansen)#/media/File:JR-Central-Tokyo-STA_Home14-15.jpg
No idea when OL will open. Somehow I feel had the original DRL gone ahead as planned, it wouldn't reach the same length as OL (Eglinton to west of University) in the same timeframe.
The fact they are putting in the glass guardrails seem to suggest they are working on the finishing touches - which in the grand scheme of things should not take that much time.
One can see the former Toronto/North York border in the middle where red meets blue along the Yonge spine.
The south Scarborough ridings - was it the incumbent effect, or the ABC?
Would this drive up the toll even more in the process? Province paying the tolls = more trucks using the route = more traffic = consortium raises toll (even faster)
Not sure how much the toll will increase over 20 years if that plays out. That's probably the big variable.
Sheppard West has the Don River crossing obstacle. The feeder opportunities are also kind of limited, when compared to Sheppard East. It will only be built for network connectivity and redundancy.
On the other hand, if Brampton citizens are that much against the 413, then more of them should've voted for the NDP incumbents; maybe the highway isn't that big of an issue to them, or they are just indifferent about the whole thing.