Since the Canadian Oakville Subdivision was added. I thought if it would be cool if other Canadian rails were added like via rail (seems difficult to implement), GO transit lines, and/ or TTC Subway lines. I favour the subway because I use it more, plus the majority of train is underground making it simpler to create. There are 4 lines, The trains that run on the line are Toronto Rocket Operating a Six car configuration and a Four car Configuration on line 4. The T1 running only on line 2 with Six car configuration. I think it will be cool if Union station was explorable and able to switch between the Toronto subway and go-transit lines.
I'm agree as well, bring the Bloor-Danforth Line a.k.a. Line 2 between Kennedy on the east side & Kipling on the west side.