I think BMPR-TATA-ROU will be more than 200 km, as per the present concept they will have to put an ICE or name the MEMU as BMPR-TATA and TATA-ROU, MEMU RSA.
But in SER IRTTC the demanded MEMU is somewhat like: HTE-ROU, ROU-TATA, TATA-BKSC RSA. In other direction its like: BKSC-TATA, TATA-ROU, ROU-Birmitrapur-ROU, ROU-HTE. So already a TATA-ROU MEMU is there in agenda, where BMPR route is not touched.