I would like to suggest a few improvements:-
1> Train should halt at New Alipurduar, it is the gateway to Bengal from the North-East, and lies dead in the "Chicken's Corridor".
2> Rake reversal of 21 coached pure LHB rake will be almost impossible at Andal at . Do it at DGR. It would be quicker at DGR, RR at UDL will take a minimum of 40-50 mins because of the lack of space at UDL. Loco reversal will choke off the traffic on the main line at prime time. Further-more the platform...
more...

number 5 is not long enough to fit in 21 pure LHB coaches, Vanachal is a different story. It is a 15 coached ICF. It fits in fine. More the line from Sainthia branches of almost immediately after the termination of the platform, so your train won't most likely even be off the Sainthia line properly. How will You do a Rake reversal and a loco change???
That is the reason why long distances and long trains get rake reversed at DGR.
/blog/post/1591617
/blog/post/1591617
I was wrong there, it is because of this reason that trains have to go all the way to DGR for RR.
3> Take the DHN-BKSC-MURI-CKP route, save the Rake Reversal at TATA.
4> DHN-BKSC sectional speed should be lower. RNC-Shatabdi takes 1.5hr from DHN to BKSC under best conditions. Surely your train will be slower.
5> UDL-ASN-DHN can be speeded up to 70+ average speeds.
6> Increase halt times at DHN,ROU,BSP and NGP to 15 minutes for housekeeping services.
Option 1,4,5&6 are optional......you can/cannot implement as per your choice.
Option 3 is practical and will save time, should be implemented
Option 2 is mandatory to change...rake reversal of 21 coached LHB at UDL is very difficult....
Lastly,
Rake maintainance facilities for LHB at NFR are not good, change zone to SCR. They, especially SC division, do a terrific job on maintaining LHBs.
Finally good work again admin...