Once upon a time, there was a great king called Vikramaditya - the WAM-4 - Shashank

Most of the problems can be souted out only for IR and NR making NDLS-MB-BE-LK0 section 130 fit..
You see in the morning you have 8 trains from NDLS to CNB via the ALJN and TDL route..And all of these arrive CNB with a delay of minimum 1 hour or even more at times...
While there are just 2 3 trains via MB-LKO route..
So...
more...

2 3 trains like NE or Sikkim Mahananda or Seemanchal can be via MB-LKO route because this route isn't congested in the morning...And even if you watch closely u will find that congestion at LKO starts after 04:00PM in the evening..Before that It is quiet free and good..
And it is just Because of the fact that NR isn't 130 ready otherwise u would have seen half of the Rajdhanis and Durantos via LKO itself cuz it is the state capital...And even today I am in favour of giving SDLH Raj via LKO and and BBS Raj thrice a week via LKO..
And your proposed route via MB-BE-HRI-BLM-CNB is already used by JAT-CNB Superfast express..
So some of the late runners of non stops can use this route as well..
And yes it is the need of the hour for IR to construct new routes and get them electrified and 120 130 MPS ready as well for future diversion of non stop trains..
And I still think that if LKO is made of the level of NDLS which it should be I think getting 3 4 more platforms and NR getting its tracks 130 ready a Lott of prblms can be solved by diverting some high class trains via LKO..