Wow very impressive. It's pretty interesting how the GTA has been able to keep a lot of those lines in working order.
I wonder how a project such as this would be actually phased in. Obviously it can't all appear at the same time, so what order would the phasing in be. When would express services be brought in (in the beginning to enhance prestige or at the end to complement existing services?). How much would it all cost to retrofit the existing rails and electrify and how much would it cost to buy the trainsets, build the stations and rezone areas. As well how much would we have to change local transit to reorganize around this new train infrastructure?
As well, what completely new tracks would have to be laid (esp for the high speed trains) to make this feasible, and how will development around major stations be handled?