It's an OK design. Nothing really new architecturally but it should work out just fine. I am mostly happy to see that this neighbourhood might get some decent density in the future. Buildings like this make areas like the Hydrostone Market more vibrant. They might also make better transit service to this area viable (which in turn helps strengthen the downtown, much more than an apartment building in Sackville would). The North End would be a great neighbourhood with about 50 of these and some higher order form of transit.
Here's one of the renderings from the PDF above:
