For a sense of scale, here is Vancouver's tallest building compared to the world leaders: http://i.imgur.com/YcCozCE.png?1
For a sense of scale, here is Vancouver's tallest building compared to the world leaders: http://i.imgur.com/YcCozCE.png?1
Vancouver is upzoning the entire corridor along Cambie street and is planning on building significant residential parcels at Oakridge (~2000 units) and Pearson Dogwoods (~3000 units). If you go out further to Burnaby, New Westminster and Coquitlam they're building tons. Burnaby just announced their long term plan for a redevelopment of Lougheed Mall that will create 11,000 units.
Basically adding further height downtown isn't really necessary and the gains are minor in comparison with the gains achieved by rezoning low density single family houses and low density commercial to higher density forms.