One suggestion:
From GTL to KCG via kurnool is 359 kms
And
Via...
more... GTL,RC,GADWAL is also same..
Why not KSK be re-routed via BAY, GTL BYPASS , RC, GADWAL , KCG
By doing this, all hinterlands like TK, ASK, DVG,UBL, GDG will get overnight train to RC which is one among highest populated city of NE karnataka.