Instead of asking SWR, SR should explore new routes.
Something like trains weekly in
1. Rameshwaram Bangalore via KRR SA TPT
2. Nagapattinam to Bangalore via TJ TPJ KRR SA DPJ.
3....
more... Trichy to Shivamogga/ Davanagere Intercity via KRR SA DPJ/ TPT SMVB ASK.
4. Trichy to Hubli/Vasco via SA SMVB ASK DVG covering Trichy Bangalore sector in night.