Rather I feel a train(preferably daily) from Dhanbad or Asansol to LTT via Bokaro, Ranchi, Garhwa Road, Singrauli, Jabalpur would be a good addition for Jharkhand people. People on this route would also get a dedicated connectivity to the Economic capital of the country. The trunk routes are already saturated,the new trains avoiding the DDU PCOI stretch would also be better operation wise. Entirely my opinion though.