2-3 points I would like to share on this:
1) Many trains got additional halt at Ratlam because watering and cleaning of coaches done here only. For many long distance trains. and Ratlam division handles many complaints to these type of problem.
2) Trains going to AII/JP/UDZ from RTM via COR delayed due to single line section and especially in night heavy traffic will be there.
3)...
more... Once COR-RTM section will be double and electrified trains will run on time and with their MPS as like KOTA-RTM section. However, it will take another 5 years to make this happen. So hope for the best!