@steamdrivenand
The story about Crewe refers to a link line between HS2 phase 2 and the existing WCML, to facilitate improved connections to Liverpool (operating with Classic Compatible Rolling Stock) not the route of HS2 phase 2 line itself.
I've attached again my best guestimate, previously published within a separate thread some months back, based on an analysis of known information, plus some supposition on my part, for the North Western Arm of HS2 - I stress that I have NO access to any official information not already in the public domain.
I believe there will be a station at Manchester Airport - a through running platform - all of the previous public statements point to a station somewhere within the environs of Manchester Airport (although of course no one in a position of influence over the decision making process has actually said as much).
I realise my guess won't prove anywhere near correct (that would be a fluke) but I won't be surprised if some of the elements contained in my prediction prove accurate.
You can avoid Alderley Edge (I should know because I live there) quite easily - it's not actually the village of Alderley Edge that gets in the way either, rather the area of Wilmslow known as Lindow protruding west from the town centre - HS2 route planners would be dumb to plough straight through that built up area of housing.
However, if you plot a line more or less in a northwesterly direction (almost the straightest, shortest distance route configuration) from the current terminus of HS2 phase 1, you pass east of Stoke and Stafford, under Brown Edge, just south of Biddulph, skirt along the southwest edge of Congleton and then turn in a large arc to a more northerly trajectory - this brings you to a location more or less equidistant between Knutsford, Wilmslow and Alderley Edge.
From that point the line could proceed in cutting to descend under the runways at Manchester Airport creating a subterranean through running high speed station at a 90% angle to the existing classic line terminus station (linked by elevators and lifts?). The line could then continue in tunnel directly beneath the heavily built up area of Wythenshawe before emerging closer to the city centre, possibly running parallel to Princess Parkway into the centre itself - this is where the engineering gets tricky - there is no clear surface pathway into Manchester City Centre.
I also believe Manchester Mayfield will be the Manchester City Centre terminus although I understand another site in Salford has been considered - some contributors here say that you haven't got enough space at Mayfield (not enough room for 400m platforms) but I've looked repeatedly at the site and it all depends how you design/configure the throat of the station - I believe there is enough space although I agree it's tight.
Barring some unforeseen and bizarre decision on the part of Justice Ousely (who is presiding over the Judicial Review of phase 1 brought by 51M, HS2AA & Aylesbury Golf Club) we shouldn't have to wait too long to find out - I think the announcement of a preferred route for phase 2 will be forthcoming by second week of January?