1] Yes doubling is required and no one is objecting it,it is good.
2] No good response. Check the availability of 17610 PAU PNBE from NED to NGP. Available almost every week that too with PQWL and very less number of bogies. The train gets filled at Nagpur mostly.
3] 12767 NED SRC availability:
7/1/19: RAC 16
14/1/19:...
more... AVAILABLE 75
21/1/19: AVAILABLE 93 and so on.....
These are facts and numbers and not opinions.
4] Nanded gives poor patronage, hence these should be EXTENDED to Aurangabad and NOT SNATCHED from NED. Hence a pit line is required as well as doubling.