Interesting idea. Decoupling is definitely an option, though it might be more trouble than it's worth. Yonge is busier, but it's not as though University or likely Don Mills are far behind. They'd all require capacity pretty close to the maximum for our subway system. It also limits the "around the horn" trips that reduce the pressure on stations like King and Union. On the other hand, it presents some interesting extension options.
I think the extension options is the big advantage. The wall of condos is going to continue pushing west along the waterfront, and I think a Yonge extension would be the perfect way to service that. A Yonge extension is about the only way that you can do it, because any DRL alignment that tries to do that would look like a piece of spaghetti thrown onto the map, and servicing the area between Spadina and Yonge would be nearly impossible.
The other advantage is the fact that you wouldn't have to rip up Union Station (subway), again. The Yonge platform can be built underneath the GO bus station, as well as the rail corridor, and connected via the improved streetcar loop. The only modification to the existing subway lines would be to have the Yonge line duck underneath the current 90 degree curve between Union and King. The eastbound trains leaving Union would continue eastward under Front, while the southbound Yonge trains would duck underneath the DRL tracks. The eastbound to northbound curve would be maintained through this as well (much like between St George and Spadina stations).
It's when you get platform and station reconfigurations that it starts to really become a headache. Decoupling would avoid both of those. The only disruption to service would be track disruptions exclusively between Union and King. Didn't there used to be a set of cross-overs just north of King? If so, put those back in and run Yonge trains only to King, and US trains only to Union during certain periods of construction.
Absolutely--especially the former given its more convenient connections. Main Street needs a dedicated walkway, but it still has plenty of potential.
Yup, a moving sidewalk type of thing would definitely come in handy there. Although with Main, it would really only be Lakeshore REX passengers making that transfer. Most of the Markham REX passengers would be transferring at Kennedy (since it would be a more direct transfer).
I'd probably come up with something a little different, but that looks like a pretty good plan to me. We'd be much better off than we are now! The WWLRT is very useful when it connects to a subway at Exhibition or Roncesvalles. I don't think that an underground light rail extension into the downtown core is a good idea, for the reasons that the TTC dismissed extending the Harbourfront LRT north along Bay during the Downtown Relief Line study. The underground section doesn't cost much less to build than a full subway, but its capacity and reliability are severely limited by the surface segment of the line.
Even if you only run the WWLRT into about Dufferin, it would still be very effective. I suggest Dufferin for the N-S subway not only because it's the busiest bus route, but because it would make Queen & Dufferin and absolutely massive transit hub, second only to Union. Brampton REX, Milton (future REX), Barrie GO, Yonge Subway Extension, WWLRT. Huge transfer point.
As for the underground LRT, the reason why I suggest that is because I think Queen needs much more local stop spacing. If you build the Queen LRT as a secondary line, you can have smaller stations that are closer together. Don't forget, with all of those GO REX services, as well as the subway system, the Queen LRT is going to basically be an improved local line for bringing people into downtown.
They can't be delayed like that. If you don't improve the local transit service, then there's little point in building regional rail. CityRail is meant to be a rapid transit backbone for the GTA, not the only transit service. That would be like building a huge new subway line and not spending a further 1% of the total cost on improving the feeder bus network. The feeder bus network is the key to the success of Toronto's suburban subway network. Without it, our subways in the suburbs wouldn't be much busier than Atlanta's or other American cities that spent big on rapid transit infrastructure but didn't bother taking care of the little things. I can't emphasize enough how imperative good local bus service is to making regional rail (and transit in general) successful. I'd like to see at least the inner 905 develop at least a comparable network to the TTC's major arterial routes, with service at least every 10 minutes or so all day. Brampton's already doing it, and Mississauga and York have it in some places. And until that network is developed, there's no point in building regional rail.
They don't even come out of the same pot of money; improved bus service is more about the operating budget than the capital budget. At first, it will mean a subsidy increase, but the large number of new riders drawn by improved service and the rapid transit connections to CityRail would more than likely result in better, rather than worse, fare recovery.
You're right that it's better if someone drives to the station than drives all the way to their destination. I have no problem providing parking at some of the stations, as the TTC does at some subway stations, but it definitely needs to be the tertiary method of getting to the station, after bus and walking.
It's true that there can be soft increases in local transit service (better frequencies, etc), but a lot of those 905 REX stations are going to really require rapid transit (primarily BRT) connections in order to be truly effective. With so much money being poured into GO REX, I have a feeling those BRT projects are going to be Phase II projects.
Bringing up the TTC feeder bus service is certainly a valid one, but one of the things that is different in the 905 is the overall density, and the way the road networks are designed. Aside from major concession roads, there aren't very many other through-roads. The end result is that a lot of bus routes are really windy, and take forever to get to where they're going. It's an unfortunate reality. This differs from a lot of Toronto's suburbs, which while they may not have a lot of density, the immediate post-war period style of development was still very much grid oriented, with a hierarchy of roads. A lot of the road patterns in the 905 are a mix of crescents, cul-de-sacs, and windy roads.
Even with enhanced bus service, the reality is still that the majority of people will choose to drive to the GO REX station. Is that ideal? Definitely not. But until we have 10 min service running in dedicated bus lanes along most concession roads, and denser development along those roads in order to make those services viable, it's still going to be a car dominated modal split.