In the context of a zoomed out global map it would seem to make more sense to approach it by Metro area. Vancouver metro area is 2.5M vs Calgary's 1.2M. Seattle

In the context of a zoomed out global map it would seem to make more sense to approach it by Metro area. Vancouver metro area is 2.5M vs Calgary's 1.2M. Seattle is 3.6M Also, I would think national capitals should be included where possible. Alas, it's an early beta.