I think that, in years to come, we'll look back at "maintaining the status quo" (on a rail franchise) was quite an achievement, compared to all of the cuts to other public services - sometimes the railway doesn't realise how insulated it has been from austerity.
But, ignoring all of the optimistic "if you build it, they will come" stuff, I'd be interested to know what would have been a "radical" option for XC?
- Paths through Coventry/ Birmingham/ Leeds/ Stockport etc are pretty limited, so there's not much scope to increase services.
- Few trains will be able to match current Voyager timings, so there's not much else you can use right now to cascade to it (certainly not full length HSTs!).
- There's very little scope to use trains that don't match Voyager timings on the routes that Voyagers operate or to tweak the paths by a few minutes here and there (since anything unable to accelerate as well or match the same top speed will find itself stuck behind stoppers and delayed significantly)
- The trains that are able to match current Voyager timings are the Avanti 221s and EMR 222s that will be freed up in the medium term, so no franchise extension is going to be able to promise to use them
- By the mid 2030s, HS2 will make a big difference to journeys like Birmingham - Manchester/ Leeds, so any big improvements to HS2 today may not have long enough to pay off before HS2 becomes the main service for a number of XC journeys
- Electrification hasn't gone as planned (e.g. the route from Oxford to Southampton should have been wired up by now, but the Electric Spine was abandoned and the GWML electrification delayed/deferred), which limits scope to improve things
- Project Thor wasn't viable a decade ago, so will be even more costly/complicated today (given the limited life left for Voyagers, compared to when it was originally suggested)
- Too much local "politics" in trimming the Aberdeen/Penzance "fringes"
So what "radical" options are there for XC? Not a great deal. Grab some second hand centre coaches to bolster the 170 fleet? They're doing that. Replace the period features on the 1970s HSTs with power doors? That too. Sit around and wait for the 221/222s to be freed up? Maybe that's the plan too, but nobody can say that officially just yet.
Also, whilst the Government have plenty of other things not heir hands before they try to come up with a "solution" for the railways (subcontract the whole thing to SERCO, as they are doing with so much of their Covid response?), XC is realistically going to be the final piece in the jigsaw - they need to tackle the majority of other bits of the railway before they can fit XC into things - I think it was always going to be dumped in the long grass for a while, as the Government sit with other decisions to take (just as XC has been for most of the past decade, sadly).