Gatimaan jab introduce huyi thi to us route par Shatabdi pehle se 150 kmph par chalti thi. Gatimaan ko chalaane ke liye fencing nahi kiya gaya tha. Faridabad - Agra Cant route par fencing high speed train( Shatabdi @ 150 kmph) ke liye kiya gaya tha.
Rahi baat Deoghar/Jasidih - Varanasi ki to haan, Gatimaan here will be an overkill. Best option would be a Jan Shatabdi or daily overnight train.