f the mpa capability were resurrected, objectively why not go the whole hog and give to the navy.
Only problem I see with this is Sea time. Anyone who gets streamed into MPA at the start of their career would never go to sea with the possible exception of WSO's. Meanwhile the rest of the FAA have to serve up to 9 months at sea.
Better having it as an RN asset under an RN budget with maybe RN personell Fighting the Aircraft and the RAF Flying and maintaining it. I think the Dutch did it this way until the demise of MPA.