It will be very unfortunate if DHA does not act responsibly and tries to preserve the mango orchards.
With so much land already acquired without spending a penny, they should feel socially responsible and keep a fair amount of orchards intact.
It will not only make DHA more beautiful and healthy, but will also keep the environment steady.
And If they choose to be very materialistic, then at least launch large farmhouses options (acre plus plot) with a condition to keep 3/4th of the plot in green.
I am certain there are plenty of people out there who would love to own a mango orchard/farmhouse in DHA at any price.