Ranchi-kolkata VB i think is not required. Ranchi cannot fill RNC-HWH Shatabdi, RNC-HWH ICE via Adra trains. RNC-HWH ICE via Adra runs empty most of the days.
Sili-Illoo bypass line is required immediately to reduce some travel time between RNC-TATA section. KGP-HWH Section immediately needs 4th line it is super congested. These upgradations needs immediately to reduce a drastic time of travel between RNC to HWH to get some more passengers.