Basically my view as well - an utterly mediocre train with an utterly mediocre interior at an utterly outrageous price.
Just look at what TPE are getting (interior wise) if you want quality. Or Stadler. Or for a more traditional 125mph bi-mode I think Bombardier's product will knock spots off them.
I would not be at all upset if Hitachi got no further orders of any kind for the UK with the third-rate products they appear to be offering.
Keep the seat issues in the public eye...keep complaining about this.....something needs to be done. They should already be looking at making improvements to them or at least the fleet that hasnt been delivered yet. Negative publicity will put pressure on them to at least replace the seat bases with something more cushioned.