Is Absolute block system in place in the BRKA-CPU route ?
IMO, ECR should invest in developing RRME station and work on eliminating most the train reversing at BRKA. 1 hrs speed-up can be achieved easily. Water refueling takes place at GMO/DHN and BRWD can be an intermediate crew change point before CPU.
That way it opens up more trains for the CIC route.
In...
more... my opinion a new intercity express on the lines of Ispat can be easily introduced between HWH & CPU, with 2 rakes.
Morning parallel departure with Black Diamond from HWH and similarly morning departure from CPU should be definitely tried out.