If railways goes strictly by assuming occupancy and profitability and not politics then the following trains should be introduced
Humsafars
1. Pune - Jammu Tawi via DD, BPL, ET, AGC, DLI, PNP
2. New Delhi - Mumbai via JP, AII, ADI
3....
more... Amritsar - Bangalore via PNP, DEC, JP, ADI, PUNE
4. Ahmedabad - Pune
5. Amritsar - Sealdah
6. Tatanagar - Mumbai
7. New Delhi - Indore via JP, SWM
8. Chandigarh - Mumbai
9. Bangalore - Trivandrum
10. Secunderabad - Bangalore
Tejas
1. New Delhi - Amritsar
2. New Delhi - Allahabad
3. New Delhi - Jammu Tawi
4. New Delhi - Ludhiana via Patiala, Dhuri
Shatabdi
1. Ahmedabad - Ajmer
2. Allahabad - Patna
Antyodaya
1. Chandigarh - Lucknow
2. Amritsar - Saharsa
3. Saharsa - Mumbai
Rajdhani
1. New Delhi - Naharlagun
2. New Delhi - Patna
3. New Delhi - Trivandrum
Sampark Kranti
1. New Delhi - Pathankot via Patiala, Dhuri, Amritsar Punjab Sampark Kranti
2. New Delhi - Agartala Tripura Sampark Kranti
3. New Delhi - Gorakhpur Uttar Pradesh Sampark Kranti
4. New Delhi - Nagpur Maharashtra Sampark Kranti