This won't be waste. Apart from PUNE-SC-PUNE Shatabdi, all trains run jam packed in SBC,SC - GR - PUNE stretch. No matter how many trains are added to this route, all will have very good patronage. And anyhow there is only one train b/w GR and NDLS. So this is a very good proposal. Its better, if 22685/86 KSK is made to run in this route.