There are disconnected old sidings both sides of the track west of both Edale and Grindleford. Too simple a solution, just a few points, new track and signalling? But even that would cost a lot and would be weather vulnerable in winter - and take years. Would it need a TWAO for restoring old track?
Making a loop at Hope and creating a third line through there, centre track bi-directional, to provide 1. passing options in both directions, 2. a Hope Valley hub station, 3. Ability to run services from Manchester and/or Sheffield without always having to run the through route. A pipe dream!
Don't blame the stoppers for all the delays. They often leave Sheffield on time and get held on the Heeley loop for the late running TPE from Cleethorpes. If it's on time a brisk walk is enough to get from one to the other. It's galling to be on a TPE from Doncaster that's on time approaching Meadowhall but loses 5 minutes waiting to get into Sheffield, by which time the stopper has left, then waits to let the TPE pass.
At present almost all services eastbound are delayed out of Piccadilly. Too many trains being funnelled through platforms 13 & 14 in particular, but that's the 15 & 16 thread.
The disconnected single-ended refuge sidings at Grindleford and Edale would be no use in their previous form. The work to provide (short) loops in their place would be far from trivial, so in that respect a single pair of loops at Bamford would provide a more cost-effective way of achieving the same thing.
The loop at Earles is no good for passenger trains - maybe one that’ll be sorted with resignalling?
It’s true, though, that a lot of the problems over there have their origins in the current Manchester chaos. Trains are delayed approaching the Hope Valley far too often, and it just compounds things. It’s far worse over the CLC between Liverpool and Manchester though!
Not that I've noticed (there's been one around Dore for yonks, not sure why). It might be to do with the tunnel, even a train quite a way ahead could cause cautionary signals approaching Grindleford?
There’s a long-standing 65mph TSR just past Hathersage towards Grindleford (in connection with the foot crossing around the curve), but the permissible speed for 185s is only 70mph there anyway (you’d notice it more on 15x traction, where the permissible speed is 90mph reducing to 75mph). You might catch Grindleford’s distant if there’s still one in, or just leaving, the tunnel though.
There was a 20mph ESR at Dore but it was soon eased to linespeed (50mph) for passenger trains and removed altogether not long after.