I'm, frankly, shocked at the proposals. I think electrification to the West is a great idea; GWML is obviously a priority and can in turn trigger a lot of further work down that way should there be the will to do so in the future, and finally getting wires into Wales is good for the country.
I think, also, that the Midland Main Line is a key route that should be electrified, as the OP suggested, with links on to Leeds and Doncaster.
However, I look at the Chat Moss electrification with confusion. Why is the North benefiting from only a small project like this? Why are ministers not electrifying Transpennine routes, which is IMO a much better option? I think it would a good investment, because:
- The line links many of the North's major cities; a huge economic positive for the region
- Resultant journey time decreases would be good for the whole region, especially if further work was undertaken to increase line speeds
- A lot of the route (including large parts of the WCML and ECML) is already electrified, reducing costs
- Consequently, you won't have as many diesel trains under the wires (provided, of course, that EMUs were provided)
- It would free up a lot of local DMUs for use elsewhere by further purchase of EMUs for local services
- Electrification of some corridors will pave the way for further projects, for example York-Leeds enhances XC electrification, Hope Valley does the same for the Liverpool to Norwich route
In my head, I have envisaged that Class 380s or similar units would replace the 185s. Some may question this, considering 185s are new trains, but I think they could be put to good use elsewhere, for example in the South West, Wales or even for Northern. They're definitely not for the scrap heap just yet. There could also be similar rolling stock orders for local services, which would of course free up DMUs to tackle overcrowding elsewhere on the network. In combination with
full MML electrification (including up to Leeds), the benefits are increased.
I think if this were to go ahead, the benefits would be seen across the North and, indeed, even elsewhere if the DMU cascade were to go ahead. Of course, the Transpennine route doesn't link to London, so of course it's not going to happen

I'm not grudging the GWML their wires, of course they deserve it and I applaud the decision to electrify the core route to the South West and Wales. But I do feel that the North, as usual, is missing out on a huge opportunity. I don't want to take anything away from the people who live on the Chat Moss, but it is the secondary route between Manchester and Liverpool, and I think TP electrification would bring greater benefits for more people.
And no, I don't know where the money would come from
PS: For the Opening Poster, transport is now devolved to the Scottish Parliament, so decisions on this will not come from Lord Adonis or whoever is in Westminster. Transport Scotland have plans to electrify a lot of routes in the future, including Glasgow Queen Street-Edinburgh. The short term plan is Glasgow-Edinburgh, and would allow for future expansion as far as Stirling, Alloa and Dunblane in the foreseeable future. The benefits of this scheme are massive and widespread. This is the kind of scheme that I would envisage for the Transpennine route.