Well a chord from the northern HS2-E stub to the Doncaster-Leeds line would allow the via ECML trains to use it....
It's not in the original HS2 East plans but it can't be that expensive to add, and it solves the Leeds station capacity problems....
I think it needs
(1) the above chord
(2) a chord just outside Leeds where it runs parallel to the Midland Main Line via Woodlesford so trains can go off it into City and onto Bradford/Harrogate/York.
(3) a chord at Waterloo so that Northeast to Birmingham trains can go into New Street and onto Bristol etc. instead of terminating at Curzon street with an awkward cross city journey to New St to carry onto Bristol.
I suspect the link to Church Fenton is for the chop.
I suspect the angst about Sheffield is misplaced on the grounds that, other than a couple of Euston to Sheffield terminators an hour and a couple of Newcastle Birminghams (ie the same number as now) everything will go via the Old Road and call instead at a Reopened Rotherham Masborough.
Someone in government obviously found out that there is a largely four track (or formerly four track) main line between East Midlands Parkway and Clayton with Sweet FA using it and asked why the XXXX@! £30 billion was being spent on a new line parallel to it when you could electrify and upgrade it to ~125mph for a sixth of the cost and only get to Leeds 20 minutes later with almost as many train paths.
....and the train paths that can't be accomodated on it sent to Derby and Nottingham instead of serving them from the middle of nowhere at Toton with a station that, if nearby East Midlands Parkway is anything to go by, will be a little used White Elephant.
I always felt that the Eastern Leg was a political scheme that made no commercial or operational sense.
This is a much better proposal that is actually of benefit to tbe East Midlands cities
It also means an end to the barmy and crazy idea of concentrating the all the expresses on the WCML, MML and ECML on to one single pair of tracks between Birmingham International and Euston; meaning if one train breaks down, or the catenary breaks, the entire London to Midlands North of England/Scotland intercity service is royally and totally foobarred.