Clearly opinions about the acceptability of the 360s vary.
However, to be clear my observations have been about the seating comfort and ride in comparison with the trains they replaced. Regardless of whether one considers the 360s seating condition to be tired or not, it is not a matter of opinion that the 222's seats have head side restraints and armrests which the former do not. The present seats are narrow to the extent that if I sit pressed against the wall I overlap the adjoining seat by about 3". I am certainly not overweight and , for someone to remain within the seat width they would have to be very slim. The bottom cushions are thin and have a hard border. Whether this is acceptable or not, for a journey of an hour at inter-City fares, is of course a matter of opinion - it is sadly fortunate, in the trains I have used (only between Wellingborough & Kettering) the occupancy is of the order of 5 passengers per coach, so being squashed into the wall by other passengers doesn't happen. We will have to wait to see whether, when/if things return to 'normal' passenger numbers have increased since the change in trains & electrification.
My comments about poor ride of the 360s on the S/L Kettering to Wellingborough were not absolute but in comparison to (i) the very similar 350s elsewhere (including T.P.E.) and (ii) 222's in the same area; though, to be fair, there's now a T.S.R. on the section in question.
My remarks about the (so far, in my case total) lack of ticket checks on the 'Connect' service is relevant in that (i) on the Inter City trains it's almost always done and (ii) a good argument against D.O.O. introduction might be to able to demonstrate the revenue, otherwise lost, that Conductors obtain from the 'pay when challenged' passenger.
I imagined that the organisation that decided to repaint the exterior of the 360s might also be the same one that decided not to alter the interior. However, R.A.I.B. reports indicate that, in the complicated railway world of inter-connecting arrangements, quite often responsibility seems to be difficult for even that official body to pin down, so on reflection my thoughts, though logical, were naive.