I suggest you calm down and pull your neck in before you do damage to yourself. It is just an option as personally I am not in favour of dragging around 50 tons of additional weight on a train weighing only 200 tons.
You obviously didn't carefully read my post where I said my family farm between Gloucester and Chepstow. I am very familiar with the route to Paddington. 2+5/6/7 is adequate for all stations between Cheltenham and Swindon and London as it is now with 180s. It may be insufficient for Reading-Paddington passengers but I was thinking of not stopping at Didcot and Reading, as it was in steam days, to stay ahead of IEPs. Changing at Swindon would provide a connection.
I may be "stupid" at my age but I can add 10 years onto 2014/5 thank you very much. HSTs should be good for that length of time with a bit of fettling as Chiltern have done and Abellio plan to do until further electrification of the Cotswold routes.
I'm very calm thanks, but if someone who clearly knows nothing about traffic patterns on the Cotswold Line and lives at the other end of the country starts pontificating about services down here, then I will feel free to have my say - in a robust way. I wouldn't dream of pontificating about service patterns in Yorkshire, as I haven't lived there for 30 years.
As others have pointed out, it is not 50 tonnes (metric) of 'extra' weight' and if you had a diesel loco to drag an IEP about then it would be another 70-odd tonnes if a 68 is anything to go by.
I did see the bit about Chepstow thanks, but you missed the fact that I used the words
heavily-loaded peak in relation to Cotswold Line and Cheltenham trains, where five cars would not be adequate west of Oxford and Swindon in the mornings towards London and late afternoon and early evening in the other direction. The rest of the day five cars is fine but the ability to quickly join and split IEP means more seats can be provided east of Oxford and Swindon across the day if needed - and with the growth in traffic, they may very well be, well within 10 years - something that just can't be done with an HST of any length.
It doesn't help inspire confidence in your opinions when you talk about Class 180s - one last ran between Cheltenham and London in 2009. Bar an early-morning train from Newbury, the five that returned to FGW only work to Oxford and the Cotswold Line and they are all carefully diagrammed so that almost all their jobs are against the peak tidal flows. But the 17.18 semi-fast from Paddington to Oxford isn't and is full and standing well past Reading, while the 180 on the 06.48 to Malvern is rather busy the closer it gets to Reading and is often full and standing between Didcot and Oxford. Even the boost in capacity IEP will provide will be eaten up quite quickly on current trends.
So as well making people change at Oxford, you want to keep them changing at Swindon as well, which is one of the things the IEP timetable will get rid of. That would go down well with the burghers of Gloucester and Cheltenham - just look at some of the stuff on the websites of the local papers if you don't believe me.
And if you were as in touch with things down here as you claim to be, you would know that the sheer scale of traffic growth means you can't skip Didcot (aka housebuilding central) and Reading - never mind the limited number of paths there will be for the GW operator between London and Reading once Crossrail starts running.
We're not in steam days any more, the world has changed and the HST developed long-distance, high-volume commuting, but is now struggling to cope with the creature it created, which is why FGW now has high-density HSTs, extra standard class coaches, conversions of first class coaches to composites... we can't afford to wait another 10 or more years because a few people are hung up about trains offering extra capacity that have diesel engines under the floor so they can run off the wires as well as under them.
PS: Where do you think Abellio proposes to get HSTs from? FGW-land... they appear to want 27 sets. FGW currently has 52 or 53 sets in traffic - I'm sure someone will know the exact figure - for which it has 118 power cars on the books. So I'm guessing Abellio will be looking for at least 60 power cars. Unless more IEPs are ordered soon, FGW will need to keep 17 or 18 HSTs for the West Country routes, so that's another 40-odd power cars accounted for.
Given the age of these trains, both operators may well want a few extra spare power cars, over and above FGW's current allowance, which would leave precious few to none available to run your continuing HST services, never mind that I'm sure there are a good few HST trailers - those surviving from the prototype train for a start - that will be unlikely candidates for life extension anyway.
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I know previously FGW has run 2 Class 180's in multiple before they decided to have them go off lease.
They did, but the train management system was never designed for fast coupling and uncoupling, so FGW only ever joined and split them in depots, or at the end of journeys, not mid-journey.
HT and GC have on occasion joined and split sets at Doncaster to save paths during ECML engineering work, but I believe a generous amount of time is allowed for this to be done.