Google Earth must have improved since the last time I used it if tripods and electronic levels are no longer required for surveying. Obstacles that make BRT an impossibility would be what exactly? Considering road tunnels have been built through mountains I'm not sure what insurmountable obstacle you were looking for on Google Earth in a Toronto hydro corridor. There are reservoirs, cross streets, residents back yards, rivers, Funstation, and freeways along the route.
The impossibility stems from the lack of interest by the public in developing this almost readily available land that reaches right across the 416 for transit purposes. It's particularly frustrating when a LRT line that only covers half the distance and will cost twice as much is being proposed only 500m to the south. I thought I may as well give it another try to strive for better and then perhaps someone with more expertise than I on these matters can advise me as to how to go about my research and analysis, how to demonstrate how it'll benefit the public, etc.
Here's what I do know so far. $10 million/km is only for the basics of building an BRT corridor (separator wall, asphalt/concrete, road reconiguration, pedestrian crossings with signals, road coloration, passing lanes, minimalist shelters). Everything else would be an add-on but at least we're talking about an initial asking price that's only in the few hundred millions range for a true crosstown rapid transit service; as opposed to billions or TC lines that only cover part of the distance. Based on road construction projects right in the GTA as of 2009 I would factor road intersection underpasses at $8 million dollars a piece. This would be necessary for crossing minor streets that will not be served as well crossing beneath Highways 409, 400 and 404. The mean average for bridged sections that no will have no stops en route is $40 million/km. This would be optimal for the roughly 3 kilometre stretch of the Humber Valley and again about a kilometre over the Ross Lord Reservoir. Overpasses with enclosed stations would be a rarer case at roughly $30 million per intersection. Jane-Finch Stn could be one of these locations as not to disrupt the Funstation property as you pointed out and make transfering onto the Jane Line less complicated (just escalators/elevator required to make a transfer). Parts of the ROW could even comprise underground stations with proper ventilation (chiefly the Yonge-Finch interchange). Each of these could reach the $100 million range, but it is unlikely anywhere other than Yonge will need a below-grade station. Apart from those, any extra spending stems from how much we want to lavish upon individual stations. Features such as automatic sliding doors at boarding interface, display panels, fare collection readers, security cameras, emergency callbox, full A/C, heated shelters, turnstiles, etc. would run up costs. But if treated more like simple bus shelters on a transit-only ROW the costing need not exceed $1 billion for 32 kilometres of service, before vehicles and predictable TTC budget overruns.
I don't really think NIMBYism need come into play here as sound barriers along the guideway would reduce the ambient noise of passingby BRT vehicles to near inaudible levels and the newer hydrid electric-diesel buses are quieter by default. Also the sight of buses can't be any more preturbing than staring at electrical towers in one's backyard, can it? Finally the BRT won't take up all the land area of the F.H.C. all things considered. Only 13.5 metres average need be set aside for regular lanes and passing lanes. Stations depending on location will also take up little space. So there'd still be room for parkspace and recreational usage including significant parts of the Norfinch Sports Fields and NY Civic Soccer Fields depending on route configuration through these stretches. At the very least, I take it as a good sign that HONE has granted permission to use part of the stretch for York U BRT which will still be in use even after the subway's completed. If they're willing to incorporate transit here then theyjust may permit a full crosstown proposal, funded entirely with the already allocated TC monies that would have gone towards FWLRT only covering half the distance.
And there that's my bit for now until I post a formal outline of my proposal, incorporating some constructive feedback I hope.