Why should be wait for Doubling.
5days may be operated from Kanniyakumari to Nizamudin via Madurai ,Dindugal,Karur,Salem ( then the present KONGU route) Hosur,Yesvantpur,Hyderabad Kachequda,Nagpur and Bhopal.
This the shortest route and covering state capitals of Karnataka,Andhra and Madyapradesh .In this route Madurai-Dindugal and Dindugal-Karur-Salem-Yesvantpur lines are less utilized line and so operationally feasible service.