Dedicated rain is already there from DHN/BKSC to MAS,ERS in the form of 13351/13352. All it needs is some major push from ECR to get dedicated rakes and make it full fledged train and also significant speed up.In today's day and age it is impossible to get a biweekly/triweekly/daily new train. Railways fixes a new time slot and runs multiple trains from diff stations in the same time slot. No wonder so difficult to get frequency increase for lots of trains like TATA-YPR, HTE-YPR, ASN-MAS etc etc.
In case of DHN-ALLp , it is already a daily train.....all it needs is to become a dedicated train (at least 18 coaches) with increase in speed. For sure it will be a hit