You can debate the issue of seats, layout and spacing until you're blue in the face, and nobody likes the lights, but one thing definitely true of the GWR HST refurb is that it was of very high build quality.
Hopefully you lot will complain loudly enough to get a change of plan so that you can have our brand new 3H1TACH1 IETs & us in Cornwall can have our HSTs back for long distance services