New real-estate becomes available in the SF Bay, but only golf courses are approved for construction. Commuters continue to drive all the way around the old shoreline because internal roads are designed in a vascular pattern to thwart Waze drivers.
a) We can't
b) What secondary / tertiary / ... / n-th order effects would that have? I'm guessing you don't know.
This is a reference to a computer game, not a serious proposal:
You can get rid of solar shade any moment you don't like it, in this respect it's an awesome solution compared to anything we do on earth and then stuck with.