Surely there is a lesson to be learned.
Instead of insisting on a Rolls Royce solution, as presumably many/most of you reckon the Nimrod was, the USN accepted a "good enough" but affordable solution in the P8, based on a commercial airframe that may not be ideal, but is affordable.
I would remind the posters who put down the P8 with such apparent relish, that it is real, and future ideal/best/superior/magnificent Nimrod is extinct.
I am sure that with a "can do" attitude, the P8 will be very effective.