As a Karachite I would welcome more coastal cities all along our coastline. I have lived in Karachi for about I would say two decades, yet there are places/areas within city limits that I have never visited or known that they exist. Karachi desperately needs a relief with huge influx of people coming from all parts of Pakistan.
Strategically speaking, putting all eggs in one basket, we are handing the enemy states a trump card over us. Take Karachi out in asymmetric warfare, which has been happening in last two decades, or worst case scenario, in a nuke strike and rest of Pakistan will come to its knees due to the financial centrality of Karachi.
I sincerely hope gawadar transform itself into another Dubai. On lighter note, whole of Pakistan comes to Karachi to enjoy the sea and sand. Its a pathetic state of affairs when the nation of 200 million got access to only one coastal city. Lets face it, Karachi beaches are sh|t as compared to the ones in Sindh and Baluchistan.