For Four Major reasons, this can be introduced.
1. Crucial Hyderabad Connectivity for Major TN cities and Towns,
2. First Overnight daily train b/w Southern Part of TN and Katpadi, Tirupati,
3. Alternative for Charminar extension & filling the gap of non-availability of HYB trains b/w mrng and afternoon hrs in TPTY.
4....
more... Connecting several important pilgrim centres and cities in South along the way from Thiruvananthapuram to Hyderabad via Tirunelveli, Madurai, Trichy, Tiruvannamalai, Vellore, Tirupati.
Change in departure time can also be considered to make this as an overnight train between TPTY and SC.
Opinions are welcome.