This train was started between Ajmer and Kolkatta initially after gauge conversion on Chittaurgarh – Ratlam section. This train was extended to Ahmedabad in this July. The train facilitated direct connectivity for people from Malwa (Mandasor, Neemuch) and Mewar (Chittaurgarh, Bhillwara, Beawar) with one of Indian Metro Cities. I am not sure why this train was extended to Ahemdabad in 2012-13 budget. Although route suggested by you will shorten the travelling time, the train will lose its purpose of serving few regions under represented till now on rail networks.