As someone involved in the GCR for over 25 years this very much seems a GCR extending north project, how that's received by the north I don't know, may be I'm wrong but that's how I understand this to be. Also remembering in recent history the GCR lost quite a lot of people for various reasons to the north, I think its going to be a big political issue to resolve who operates what to where and when, and I wish the management of both parties all the luck in the world.
I can see a double track section north of Loughborough being created but that needs infrastructure at the end, reversal of trains into Ruddington won't permit intensive timetables so the value of the double track is questioned unless significant capacity improvements are done to facilitate it, I think the GCR needs to improve the Leicester north section first, second platform and signalling to permit 2 trains at the station, this being the bottle neck at present when operating intensive timetables, it takes 30-35 mins rothley - LN - Rothley, working absolute block could potentially halve that with double track...