Rewa desparately needs
1. A Morning Intercity towards Allahabad as there's not a single train towards Allahabad till 4 in the evening. Terminate it anywhere Pratapgarh, Kanpur, Fatehpur, Varanasi, Phaphamau or even Jaunpur; It must touch Allahabad as buses have huge rush anytime for Allahabad. It'd let people of Rewa to take trains from Allahabad towards various other destinations.
2. Of Course a train to Mumbai or to Pune (via Panvel).
3....
more... A train to Mysuru/Hassan via Bengaluru obviously.
4. If possible a train towards Madurai/Coimbatore/Kottayam via Chennai obviously.
This is it