Keeping in mind the horrible "snail pace" of "Mhow-Sanawad" conversion, railways should construct just INDORE-DHULE line via Mhow-Sendhwa-Nardana. Benefits of this will be:
1. Existing Dhule-Chalisgaon electrified track will be used. Its alignment is in Mumbai direction at Chalisgaon, which is good, keeping in mind Etawah-Bhind-Gwalior-Guna-Maksi-Indore route.
2....
more... At "Nardana Junction", proper bypass line can provide Indore-Mhow-Sendhwa-Nardana-Jalgaon-Bhusaval-Nagpur-Kolkata route.
3. Similarly, Indore-Nardana-Jalgaon-Wardha-Ballarshah route can be used by Jaipur/Rajasthan trains via Indore towards Hyderabad/Bangalore/Chennai.
4. Lucknow-Etawah-Gwalior-Guna-Indore-Dhule-Chalisgaon-Mumbai will be very useful, along with Delhi-Gwalior-Indore-Dhule-Chalisgaon-Manmad-Pune
No need to construct till MANMAD, will save time & money !