I think they can start from other station. As development is at one place people are demanding.
Now 4 airports of AP has direct non stop flights to banglore says the demand. Tirupati, Rajhamundry, Vijayawada, Vizag all have couple of non stop flights to Banglore. This shoes the demand.
But total AP has one one direct express train to Banglore , its not at all enough for the Telugu crowd at Banglore.