I am talking about UR passengers, not reserved passengers. Even the 2 UR coaches ( 4 if you include the SLR as they also have some seating capacity) are horribly packed and usually have enough people to fill 6 UR coaches with normal seating and even worse in some times. Now a person traveling to MDU or MAQ from MAS, can at least travel to some other intermediate station like CBE or TPJ and find connecting buses or trains and reach his destination relatively comfortably. For 400-500km, even traveling by multiple trains or train+bus combo is comfortable. But if said person has to travel from MAS to NDLS, then if he can't board the train, then it will be a sheer nightmare as 2000km of travel hoping between trains and alternative means, will be very tiring and hard, especially while traveling in UR.
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more... 500km distance , even if expensive by bus, is still at least possible to travel and many options will be available. But for 2000km, if the person has to struggle and find alternative means, not only will it be expensive, it will also be physically difficult. UR coaches in the northbound and eastbound trains from the south, like TN, GT, HWH mail and Coromandel are always fully packed. Any decrease in UR count will severely affect several hundred people every trip!