There was a plan to build a 42 storey condo Yonge and Gerrard in 1969. I don't know which corner, or indeed how near to the corner it was to be, but the photo files that I have access to show it as a sleek Modernist box, apparently without balconies, with strong horizontal definition for the floors and plenty of glass. Rather ManuLife-like, very typical for the time in our town, set back from the street with landscaping consisting of trees and open grassy areas, and the main floor entrances set back under an overhang with piloti at the perimeter supporting the building.
Correction: This luxury concrete and glass condo was approved by the City and was to have gone on the east side of Yonge, not on the site we're discussing. The two and three bedroom apartments were priced at $27,000 - $65,000! Central air, individually controlled electrical heating, fitness and health club, indoor and outdoor pools, squash and tennis courts, saunas, supervised recreation facilities and no incinerator on the premises as an anti-air pollution aid. Shagadelic baby!