The landscape architects have included plenty of programming for the space, including children's play structures, busking space, and plenty of seating.
Welcome to grim gray city! (I'm not seeing any kids structures in the rendering, but gonna bet they lack colour and are grim like the Sherbourne Common "playground".)
The exteriors don't look like they relate to the pedestrian realm all that well. It reminds me a bit of the bunker feeling that the Four Seasons gives off at ground level