Midtown Urbanist
Superstar
I'd be even more ambitious, and look to creating high-rise neighbourhoods throughout the Dundas corridor (maybe stepped back from street-facing midrises as you said), with the highest densities centered around Dixie GO.Even better for the future of Dundas is to demolish the box buildings behind parking space and build midrises that start from the sidewalk. They can put the parking behind and out of sight.
Especially with a BRT/LRT on Dundas, much higher population densities can be accommodated.