Pinnacle should resize the units and include a good chunk of rental, in my mostly uninformed opinion. Almost nobody wants 400-500 sq ft investor cubbyholes. Those days are over. People need and want living space, especially when they're paying 800 Grand and up. If you're a family of four, for example, you need 3 bedrooms.
The tower designs are not too bad, to my eyes (they look a bit bulky, even though they're not), but I do very much like the descending circular sweep and setbacks of the base/lower levels. There's nothing else like it in Toronto. Yes, it's all a bit too busy, perhaps, as 1Ć0 pointed out, verging on a hodgepodge.
As for the plaza, the Star quoted observers being underwhelmed. Yes, something really spectacular could be done there, such as a standout work of art (Chicago's stainless-steel bean monument is mentioned), but the plaza in the renders is far from hideous or terribly designed. And this is Toronto; we don't do spectacular. I think maximizing the greenery is critical, because there's so little else of it in the surrounding area.