Poorvottar Samparkranti should get priority reagardless of any zone it travels.Given the fact that NFR doesnt have any bDuronto and PSK is the train people prefer after rajdhanis,it should definitely get priority.Thats why most people in NFR these days travel by Rajdhani only even if they need to travel by lying in the floor itself.I think the KYQ-ANVT or NJP-NDLS SF routee is better suited for such.