Ranikhet Express - रेगिस्तान में हरियाली

That's what I was mentioning sir. Those three can be used as originating trains with a healthy quota for BZA. For example, Circar runs with de-reserved coaches till BZA. Seshadri also used to run with dereserved coaches till BZA. NS-NSL mostly gets passengers from BZA.
Even if these three get originating trains, only the ones towards SC get completely filled at the originating station itself. All the other trains like Seshadri, Circar, LTT express, Kondaveedu get a lot of passengers from intermediate stations like RJY or BZA. The quota may be a bit less now, but
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solution can definitely be found to ensure good quota for BZA.
You are not depending on NS, MTM, CCT for your trains. You are just depending on them to take the load off BZA. Think of it like how SBC trains get dumped at MYS to reduce the load on SBC. In a similar way, these three are more or less just originating points. If BZA becomes the originating point for all long distance trains, then again more trains will have to be started to serve the Godavari districts or the south coastal districts as these will not be covered by trains originating at BZA. This will severely congest BZA. Instead of running multiple duplicate trains, it will be better for everybody to use the available originating stations efficiently. Other than SC/TPTY, there is never enough passenger traffic to fill up an entire train for any other destination from these places. Quotas can be adjusted perfectly for BZA and keep everybody happy.