In line with Premium concept of 5 stops, regular SF/ AC SF can be introduced in trunk routes. Such trains can be called Five Stops Super Fast (FSSF).
Some such trains (with max 5 intermediate stops) came to my thoughts are given below. Suggestions/ views/ additions welcome.
1. MAS - KPD - JTJ- KJM - BNC - SBC
2. MAS - KPD - SA...
more... - ED - CBE
3. MAS - VM - TPJ - DG - MDU
4. MAS - VM - TPJ - MDU - TEN - NCJ - TVC
5. MAS - RU - GTL - GR - SUR - PUNE - LTT
6. SBC - ASK - DVG - UBL - BGM - MRJ - PUNE
7. SBC - RRB - UBL - BGM - MRJ - PUNE - LTT
8. SBC - DMM - GTL - RC - GADWAL - SC
9. MYS - HAS - ASK - DVG - UBL - LD - MAO
10. MYS - HAS - SBHR - KBPR - MAJN - UD - BYNR
11. MYS - SBC - DMM - GTL - DHNE - SC
12. MYS - HAS - ASK - BAY - GTL - RC - GR
13. MAQ - UD -KUDA - KAWR - MAO - LD - UBL
14. MAQ - KBPR - SBHR - SKLR - HAS - ASK - SBC
15. MAQ - UD - MAO - LD - UBL - GDG - BGK
16. MAQ - SBHR - HAS - ASK - BAY - GTL - RC
17. SMET - RRB - ASK - TK - KJM - TPT - SA
18. SMET - RRB - JRU - BAY - HPT (INTERCITY)
19. SMET - RRB - DVG - HVR - UBL - DWR- BGM
20. UBL - GDG - HPT - BAY - GTL - RC - GR
21. UBL - GDG - BGK - BJP - SUR - GR - BIDR