I don't think Torontonians will ever support higher taxes of any kind for transit expansion.
This, however, is not due to Torontonians not willing to pay it as most would be willing to take some kind of a hit if it improved their commute. The trouble is the TTC, Metrolinx, and City Hall. The TTC and Metrolinx don't even acknowledge each other esistence and coordinating their policies and expansions is near heresy as their are run like fiefdoms. The manderines at both agencies care little for the long suffering Toronto commuters as their over riding concern is to maintain their "turf". The AirLink exemplifies this as Toronto could have a full mMetro service with standard fares serving both the NW area of the city and Pearson but that would require Metrolinx transferring ownership of the line to the TTC which is heresy and Toronto commuters be damned.
This uncoordinated, myopic, irresponsible, bureaucratic indifference is what has led to Torontonians having absolutely no confidence in either entity. People would be more willing to atleast tolerate higher/new taxes for transit expansion if they thought the money would actually be used and their tax dollars respected. This is why Angelos and Vancouverites begrudgingly accept their respective transit taxes............they actually see results. L.A. has expanded it's Metrorail service and BRT at an incredible rate with construction ongoing, another new LRT line {Expo} just opened up, Of course Vancouver's SkyTrain is expanding fast with construction to begin on the Evergreen Line early next year with service to begin in 2015. An 11km totally grade separated mass/rapid transit line which includes trains and a one km underground stretch for just $1.4 billion.
Toronto's prices are ridiculously high as the SRT to LRT conversion exemplifies. Same goes for the $300 million per km Spadina ext in the suburbs that needed to be tunneled so as not to block the view of Walmart and use grandeous stations which it cannot afford.
It was noted above that the Spadina extension is running late due to water troubles. If this was a PPP like the Canada Line that would be irrelevant. Once all the environmental reviews were in and the companies competed on the project that would be irrelevant. They made their bid and Vancouver would make they stand by it and if the line was late the financial penalties would be huge and ANY cost overuns would be born 100% by the private partner.
The meager amount of transit expansion Toronto is getting for $8 billion is mind boggiling.....all that money and it's subway system will actually be smaller in a decade than it is today. This is why Torontonians will not part with their hard earned tax dollars, they don't trust the TTC to build rapid/mass transit in a timely manner, completing it on time, and bring it in on budget with a budget that is the going rate in other NA cities. Look at the DRL report {and even calling it a report is an insult to the word}........don't consider Queen, the AirLink, using rail ROW, DMU, PPP just "give us $8 billion and we will see what we can do".
If Torontonians are EVER going to agree to tax increases for transit the agreement must include, type and amount of taxes and their duration, strict construction timetables, defined routes, defined technology, firm prices, open tendering, type of construction {ie elevated, at grade, tunnel} and a guarantee that if any of those conditions are not met the money is returned to the citizens. The good thing about that is that Toronto would have to entertain PPP for guaranteed timetables and all cost overruns being paid by the private partner.
The TTC have shown themselves to be corrupt and incompetent and only something like that will be enough for the citizenry to vote yes on a plebisite.