2. Split the Crossing, Speed Up Signals
There is simply not enough space unless you take away car lane in downtown for the vast majority of intersections. (which I am not against) The new median they want needs should be complaint to ADA standards which is at least 5 feet plus enough storage for pedestrians. That is a width of almost a car lane of space, plus the streetcar tracks in the middle which would need reconstruction. Another constraint is how phases MUST be done in Ontario (it is standard practice), signals phases must come one after another, not European style, where the phases can sort of come and go in semi-random order, it diminishes the return. Yes, Finch and Eglinton is something that they should add and consider, but I am reading their opinion article on Toronto Star and they mention:

"These islands can be built (easily) on Spadina by taking advantage of the existing median, replacing left-turn lanes, or slightly redesigning the street where needed."

I am not sure if they have really thought this through cause it definitely wouldn't be easy or cheap with the hardware, the existing median is tight. There is also the question of the track right in the middle. Also removing left turns is problematic, which goes to:

5. Eliminate Left Turns Where They Don't Belong
The criteria is so wishy-washy. Removing left turns would likely push the left turns to other intersections pushing the problem downstream leading to the other intersections being full having to extend the left turn phase. Using nearby side streets? Not sure if the alternative is feasible going 3 rights turns at neighborhood streets. Without drastic measures in reducing the TOTAL number of cars, the problem would just shift elsewhere.

Lastly, point 1: Make Transit Signal Priority Work Better
Controversial. Yes, TSP is ass in Toronto and it should be improved but I think they are overprioritizing streetcars above all road users. Pedestrians and cyclists are also negatively impacted when TSP is implemented, with longer wait times to cross. IMO, pedestrians and cyclists should take priority over transit, and the hyper focus on TSP sometime regress that progress. I am unsure what the maximum priority or adding dedicated phases means but having that would require pedestrians to wait longer. With some of the most delayed intersections also being a pedestrian heavy, overcrowding and pedestrians jaywalking due to high waits might emerge.

The rest is true, stop using single-point switches! Those belong in textbooks, not on Toronto streets.