Why? What would run on it?
Nothing is booked to run that way I agree that it isnt high priority unless done as major works. I think Leeds to Hambleton Jn does need to be done though for diversionary purposes (usually due to engineering works or a failed Northern 321) and it does seem a shame not to link Micklefield to Colton Jn at the same time. Perhaps it would be best waiting for TPE electrification project. Could also terminate the York to Blackpool services at Leeds (15 min turnaround based on current timetable, more if you divert that via Brighouse) so it was an EMU from York to Leeds (or to Bradford Int if you wire there and divert the Blackpools)
I know you are now going to mention cost and that it'll never happen but this isnt a prediction thread more of a wish and hope, its how I would I would do it. I'd have a large Cross-Pennine project starting at each end,
Phase 1
Convert Man Vic / Guide Bridge - Stalybridge / Rochdale and East Leeds Parkway (if ever built) /York / Leeds to Huddersfield / Bradford Interchange to EMU
Divert York - Blackpool via Brighouse and split it from Leeds except in peaks and in each direction I would have
South Milford off peak stops to be put onto TPE Hull services
East Side
1tph Man Vic to Leeds via Dewsbury DMU
1tph Man Vic to Leeds via Bradford DMU
1tph Bradford to Rochdale DMU
1tp2h Leeds to Blackpool North via Bradford Int DMU
1tp2h Leeds to Blackpool North via Dewsbury DMU
1tph East Leeds Parkway to Huddersfield EMU
1tph Bradford to Wakefield via Huddersfield DMU
1/2tph York to Bradford Interchange EMU
1tph Leeds to Bradford Interchange EMU
TPE services all remain DMU
West Side
2tph Man Vic to Rochdale EMU
2tph Man Vic to Stalybridge EMU
1tph Man Vic to Huddersfield via Stalybridge DMU
Man Vic to Leeds services as above
EDIT Actually wire up Man Pic - Liverpool LS via Warrington at this point and convert 2 services to DMU
Phase 2
Wires through Summit and Standedge Tunnels (take your pick to which one first)
Man Vic to Hudderfield via Stalybridge becomes EMU
Leeds - Bradford Interchange - Rochdale - Man Vic all reconnected as 2tph (or more) EMU instead of 1tph DMU and 1 split service DMU
Rochdale to retain 2 EMU shuttles to Man Vic unless I can secure funding for a full time turnback at Littleborough
Newcastle - MIA to become EMU
Phase 3
Extend Wires to Middlesborough from Northallerton, Micklefield Jn to Hull (fixed rail contact on Selby Swing Bridge, its been done on other bridges before) convert services to EMU
Scarborough to Liverpool becomes York to Liverpool, Leeds to Blackpool extended back to Scarborough
Phase 4
Connect Dewsbury / Huddersfield to Sowerby Bridge / Halifax to allow for diversions and current Man Vic to Leeds via Brighouse to go EMU, may consider the line from Leeds to Healey Mills to be done as a diversion too ** and would allow Bradford to Wakefield to go EMU, otherwise will have to split that at Huddersfield so EMU Bradford to Huddersfield, DMU onwards
I wouldnt do that just yet as I would rather start on the MML electrification project first and that has to take place after the current work but I might get it started by 2030, when I get MML started (Leeds / Doncaster to Sheffield first, then Bedford to Derby / Nottingham or at same time depending on workforce then the bits between the two, then diversions), I shall do this then I'll start on XC, wiring from Nottingham to Bristol via Cheltenham and Birmingham to Oxford, Reading to Basingstoke and then extend to Plymouth / Penzane when I've sussed out how otherwise it'll have to be bi-mode.
The reason I would do TPE electrification and the North part of MML first is that by the time I get this done I could probably get some knock off EMUs coming to the end of their life in the form of a load of cascaded 321s (superceded by something in the south) for 10 years otherwise we might have to get modern DMUs and we arent allowed them on Northern franchise services (being sarcastic), I could then fill in the gaps after the North West electrification
** becomes decent value if Leeds - Wakefield K is included in MML works
I APOLOGISE FOR GETTING CARRIED AWAY ITS 0405, I EXPECTED TO SLEEP HALF WAY THROUGH