This thread essentially the same as last year's
Alternatives to Transit City.
The problem many of these proposals is that the plans posted here all seem to be based on the goal of "how can we move the largest number of people downtown for any given amount of money." Getting people downtown is important, but isn't the top issue in the city.
For Miller and Giambrone the top concern for the future of the city is the fate of the declining inner suburbs. Specifically Malvern, Jane/Finch and Rexdale. Transit City sends lines, in some cases multiple lines, to all these areas. There are certainly routes that would get more riders, but areas like Southern Etobicoke and Riverdale are doing fine and don't need urgent intervention. The map below makes it pretty clear why Shepperd East and Finch West are such priorities.
The next priority is to build livable neighbourhoods. Ones that are walkable, mixed-use, and free of crime. The ideal is for people not to have to go downtown for their work and their shopping. The Avenues Plan hopes that streets like Eglinton and Sheppard will become more like Queen or St Clair. In the past neighbourhoods like this have almost always developed around streetcars, not subways. This was another impetus to Transit City.