Another transit "L" for the Toronto area.
I absolutely hate these at-grade LRT's.
Rip 'em up and replace them all with bus lanes!
If we had to do it again, should the Finch LRT have been built as BRT? I think there's a very good case for yes, given the drastically lower capital costs, shorter construction timelines, etc. But objectively, what we have is an upgrade over BRT in capacity, speed, etc. Downgrading for bus lanes is a preposterous idea.
Completely "re-do" Line 5 so it tunnels all the way to Jonesville Crescent, and then elevate from Victoria Park Ave all the way to Eglinton GO station. Make the line completely grade separated. As it should have been from the very beginning.
In the long term, I think a full or near-full grade separation of Line 5 is very doable. No extra tunnelling needed. My back-of-the-napkin plan:
1) The in-median section at Sunnybrook can be grade-separated by shifting eastbound traffic north of the LRT ROW (a new bridge span over the West Don and tunnel under the CPKC rail line would be needed, which wouldn't be cheap. Perhaps this could be packaged along with the station for GO 2.0 if/when that happens).
2) The in-median section between Don Valley Station and the East Don can stay. It can be separated from vehicle movements relatively easily. Get rid of Aga Khan station, redo the intersection with the DVP to eliminate left turns (some kind of modified cloverleaf, perhaps?), and create a grade-separated connection to Wynford station, cutting out the at-grade crossing.
3) Then transition to an elevated guideway for Bermondsey station onward to Kennedy.
Grade separation isn't an all-or-nothing proposition. In fact, I don't think you need a new ROW at all until Victoria Park or so.
We could probably get away with crossing arms/pedestrian refuge islands at Leslie and Bermondsey, and remove the vehicle conflicts everywhere else, to reap the full benefits of a grade-separated line. This approach minimizes the amount of new hard infrastructure needed, cutting costs substantially.