I sincerely hope this development never happens. If they wanted to redevelop like with Oakridge where they keep the mall portion I'd be fine with it, but making everything outdoors in a city known for rain doesn't make much sense to me... Not to mention climate change making things like heat waves more common, our public indoor spaces are incredibly valuable.
There's already countless outdoor areas, and while Metro Vancouver has a few malls, I'd say Metrotown is the best of them. I do like mixed-use developments with street-level retail, but are there not still a thousand strip malls and barely used parking lots that could be redeveloped first?