OK, it's probably not high on the priority list, but admire the drive of the proposer to even get anyone to talk about it.
Certainly beats sitting on a forum moaning about the state of the railway, doesn't it?
Also, by testing ideas via scrutiny, the idea can itself be improved.
Some good points
- Magna Park could be connected, and have an intermodal terminal (it's the size of DIRFT so surely some intermodal traffic?)
- rail service to Lutterworth, which will grow significantly in coming 10-20y, and maybe other places not served by the railway
- Improved connectivity for Leicester & Northampton, which both have significant traffic issues
However, if the basic idea is about East-Mids to Northampton/MK connectivity, then Harborough-Northampton looks like it'd be shorter and faster.
If the real issue is Magna park, then simply build a freight spur
If the real issue is traffic in Leicester and/or Northampton then maybe other public transport is the answer?
So my feedback is that the idea needs a bit more focus about the problems it'll solve
Secondly it needs to be based on 21st century needs, and so only use old alignments if that's convenient. This feels like it's trying to do too much with 19th century railways.