The sad thing about every major community across Canada is that we like the Americans HAD major streetcar/LRT networks even in smaller regional communities and we let the Automotive/Petroleum coalition sweep in and destroy everything that was built over several generations... To even replace a portion of the network would probably be staggering.
Having said that, I'd love to see a study of exactly that. How much would it cost to rebuild every streetcar network destroyed and then how much it would cost to expand it to where it should be now for a city of its size.
At least there are now a plethora of options on how to do this more cost effectively... I present a few ideas for y'all to discuss...
01-Bombardier Primove trams
https://en.wikipedia.org/wiki/Hexi_trams
These streetcars run at up to 50 km/h without wires and charge in 10 second bursts at station stops whilst picking up passengers. They can also be equipped with Primove technology that allows buried induction drawn power which like a stove is super safe since even if someone fell onto the induction charger while power nothing would happen unless they were wearing a metal ring or bracelet that conducts electricity WHILE being under the train which is physically impossible...
02-Autonomous Rail Rapid Transit
https://en.wikipedia.org/wiki/Autono..._Rapid_Transit
Basically the Montreal subway come unhinged aka an LRT train that runs on rubber tyres like a bus but follows a dedicated track. In Montreal's case? A physical guide-rail. In this new tech? A painted magnetic stripe that is used by dumb robots in factories around the world like Tesla in Fremont and what GM thought all cars in the future would use to drive themselves on future highways in the year 2000. From what I can tell all the Chinese did was bundle a bunch of dead tech together and create a winning formula that I guarantee will see widespread adoption around the world in the next 10 years.
If you can replicate SUBWAY-like efficiencies at developing-world bus prices, that's a winning formula for many a city... A jacked version of Curitiba BRT if you will...