प्रयागराज एक्सप्रेस - जो भी हो तुम खुदा की कसम; लाजवाब हो

I was thinking most of Rajdhani & Duranto runs on NDLS-GAYA route, what if these trains runs through some other route because they are the main reason trains get horribly delayed in this section.
The Sealdah & Howrah Raj can run via CNB-LKO-GKP-CPR-BJU-ASN. There are many feasible routes are possible for other Raj too whether its Patna Raj, Ranchi Raj or any other Raj. Please give your opinions and alternate routes for other Rajdhani & Duranto.

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