Sounds like a good plan, gweed, and I love that you've made a map to go with it. If you're going with such a great comprehensive plan, I'd definitely include the North Toronto line. Personally, I'd also include a diversion of the Milton line to Mississauga Centre.
Thanks guys! Is the North Toronto line the one that runs along the corridor just north of Steeles? From where to where would you suggest it run? I haven't seen it implemented on any maps, so I'm not sure exactly how it would fit in.
The diversion to MCC also makes sense, good idea. I've been toying in my head with a few small changes to the map:
1) Maybe push the local service on Lakeshore West 1 stop further to Port Credit.
2) Maybe push the local service on the Richmond Hill branch 1 stop further to Old Cummer.
3) Maybe denote some kind of a DMU service running parallel to the peak hour routes beyond where the electrified routes end. Maybe in a dark grey or something. Not sure how to show that without it getting too confusing though.