Same thing applies in creating new category of trains every time. Rajdhani, Shatabdi, SF, M/E, passenger were enough would have been better but now in addition to them we have Duronto, VB, AB, Jan Shatabdi, Garib Rath, Humsafar and what not. ЁЯдж
In case of 3E the decision to price them near to 3A was the bad decision. They should have priced them atleast 25% less than 3A. This would have made a lot of SL class passengers willingly make upgrade to AC travel.