Bro Visakhapatnam railway station is already conjested. Also remember that Visakhapatnam is now Executive capital of Andhra Pradesh. In my view to accommodate new trains in Visakhapatnam some trains can easily extended to other places in uttarandhra like Palasa,Vizianagaram,Salur,Parvatipuram,Araku,Srikakulam road,etc
Also see in those pics another 2 platforms can easily built