Anyway there is always a demand for train between Bangalore and Patna, a new train can be started but via SBC-GTL-DD-KPG-MMR-BSL-ET-JBP-Cheoki-Danapur. i.e. on the routes of KK and Pune-Danapur sf.
The distance will be reduced by 150 Kms ie. by almost 3 hrs. And it will also be useful for Shirdi pax both from SBC and PNBE.