I would be on board with the density with design improvements.
The three clone towers aren't working for me. There is no reason each building can't have a unique expression even if they're different phases of the same development. I'm noticing a lot of spandrel in the renders, which irks me because I hate punched window buildings masquerading as glass towers. The use of grey isn't doing anyone any favours either. Corktown has plenty of unique and beautiful materials to draw inspiration from (every colour of brick, stone, concrete, wood, etc)
Overall I think these buildings need to be pushed back from John St to give any retail at the base of this thing a chance of succeeding. Cars fly down John, and given the steep slope any form of patio will be nearly impossible without room for a grade adjustment or some terracing along the sidewalk.
Also are there plans to replace the rental units in the building which is being demolished? Are the people that live there currently being moved to other properties or is it tough luck?
Either way I think these need a lot of refinement.
Medallion Properties is building a massive rental complex in North Toronto called Casa Emery Village, and each building is given a different look that ensures the development doesn't seem to monotonous. I would like to see the same for this site. Note how each building is a little different, and the slope of the road is addressed with terracing down and the storefronts are set within a covered walkway to provide an extra layer of protection from the busy road. Though this is a more suburban example, I think there is a lot to take away from it.