Kerela is probably the state along with Goa, that is lacking a daily train towards Kolkata. A lot of people from eastern India have jobs/education oppurtunities in Kerela....
There should be a daily sf from Kolkata towards Kerela...
Since KGP-CTC-BBS-KUR-BHM is so densely congested the new train could use the HWH-TATA-ROU-SBP-RGYA-VSKP route or HWH-ASN-ROU-RGYA-VSKP route or the newly laid HWH-TAK-VSU-BQA-ADRA-ROU-RGYA-VSKP route ( totally uncongested route)!
VSKP-BZA...
more... run can be slacked to avoid congestion... and ofcourse a daily slot would have made way for!
Your opinions are welcome?