Champaran HumSafar Express : इन अजनबी सी राहों में, जो तू मेरा हमसफ़र हो जाये, बीत जाए पल भर में ये वक़्त, और हसीन सफ़र हो जाये. - Piyush Singh

New line from Deoghar to Bolpur (Santiniketan)

Deoghar - ABV International Airport - Sarawan - Sarat - Chitra - Nala- Siuri- Bolpur (Santiniketan)
Siuri to Bolpur line is already proposed I think.
This will...
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connect Deoghar with Santiniketan the two imortant places of the area bosting connectivity to the ABV International airport and developing the area of sarath, Nala, Siuri and also connecting to Chitra coal field as well.
Further from Bolpur to Kokata this can be an alternate route for Kolkata as well and can ease out main line traffic.