Thanks for linking to the report. I think, if properly done, could be a net benefit to the nabe. I note how the buildings are tallest to the south and shortest at the north, which at least is a nod to the old residental areas to the north and east. There's provision for an attractive gateway to the Railpath extension.
I used to live a few blocks to the north, and I'm okay with this particular proposal.
Dufferin (south of Bloor) did not have any bus service until 1960, and the only regular transit service on Dufferin before that within the City of Toronto was the Harbord streetcar on the short jog from Hallam to Lappin until 1947. The Ossington trolley bus was busier until at least the 1970s, when travel patterns began to favour Dufferin over Ossington.