Looking at highway infrastructure plans:
Holy managed lanes batman! Interesting to see them on the municipally owned Gardiner and DVP - I wonder if MTO is expecting those to be conversions or widenings. They would obviously have to be conversions on some parts (namely the Gardiner through downtown), but widenings are possible on the DVP and etobicoke portions of the Gardiner, if unlikely. I would be supportive of conversions here, especially closer to downtown. The DVP could use with some geometry improvements that would really improve capacity without a new lane necessarily, and even a new HOV lane could probably be accommodated north of Eglinton fairly easily.
This is the first I've ever seen of MTO contemplating widening the 401 through central Toronto, on this map from the 427 to the 404. Now that would be an interesting project, with quite the price tag. I feel like it would be very politically challenging too, depending on proposed scope (just a new HOV? or more than that?). I would be supportive of adding perhaps 2 HOT lanes in each direction being added in a "hyper express" pattern. I expect tolls would basically be required to pay for the thing.
surprised to see the 404 extension all the way to Highway 12. Not necessary in my opinion, at most it's only needed to make the connection to Highway 48, and you can otherwise probably be fine with 4-laning 48 without the full freeway buildout.
a couple of gaps on the wider outer rim highway infrastructure - including the planned RIRO to Lindsay and upgrading Highway 11 from Orillia to Barrie. Highway 11 especially is probably going to need that work on the plan's horizon period, but 35 might be able to get away with a few passing lanes. Highway 12 near Beaverton is also needed and not shown, despite Highway 9 being shown as widened.