It's not going to change . . . . I've logged over five and a half thousand hours on P3s (B and C models), and I've seen the inside of these new P8s, and read quite a lot about their performance, and importantly, I've seen and been in the flight deck.
There is absolutely no way this new P8 is going to come anywhere near the established space and flight comfort of the P3, not even taking into account the very 'squeezy' flight deck for the long, very long missions this airplane will be asked to do.
Long missions of course, only if they don't try and fly it at any sort of low/lowish altitude, the result of which will surely be very much shorter missions, or an appointment with the AAR tanker.
And don't even start me off on the decision to operate these airplanes from remote airfields without a flight engineer.
The best option was always the launch of a modernized version of the P3!