I'll join others in thinking Westbank has been tweaking and tweaking for the better. I am a bit skeptical of the rooftop trees though. I have yet to see a rooftop tree of significant size implemented in Toronto, it will take a lot of tender care, waterproofing and structure protection from the tree's roots. In fact, the only rooftop tree I can ever recall seeing was in Vancouver, where it has a generally wet climate to help support elevated vegetation.