1) Jan shatabdi shifted to jalna as orignation as a result stoppage time as well as quota for Aurangabad has gone down. I myself saw so many ppl not being able to board the train.
2) Even two new daily trains in today's date from Aurangabad to Mumbai will not be sufficient to cater the demand. It's not Aurangabad. In Aurangabad district only Aurangabad taluka has railway connectivity rest don't. Same with nearby talukas of jalna,ahmeddnagar, beed, buldhana districts.
Hence shatabdi would be ideal for this route.
3)...
more... Due to lack of air connectivity corporates prefer train travel. Aurangabad is the educational, commercial hub of central Maharashtra.