There is this attitude from some groups of commuters that if you travel from a 'city' near the periphery of the London commuting area, there is some sort of entitlement to what they reagard as an inter-city layout in trains. Yet there are complaints that journey times take too long. Dwell time are extended wherever the fasts stop with end doors and there is no partiular need for end doors especially if there is no trolley sevice.The problem with the latter is there is, or at least was (*), a massive political issue with Portsmouth Direct users disliking the 450s, presumably mainly because of the 2+3 seating.
* I add this as a qualification, as I’m unsure if this is still a massive issue, or whether the bulk of the people who agitated when the 450s first appeared some years ago have now retired or now “work” from home.
Personally I have mixed views on this. I can get that the 450s aren’t great when all seats are occupied, and Portsmouth to London is a pretty long journey. However the flip side of the coin is that the extra capacity was valuable. I’ve done London to Portsmouth on a 450 and found the experience fine, but to be fair that was on a lightly loaded contra-peak 12-car, so not really the full experience.
As for journey times, I don't know how many travel all the way from both Portsmouth stations and Havant, but certainly Petersfield to London isless than 75 minutes so no more requiring 'IC' layouts than trains from London Bridge, Liverpool St and Euston. Then there's the Alton lot!!