I am unfamiliar with the history of the Academies' woes, however is there any precedent in making them six year institutions, awarding Masters Degrees and requiring six years of service? If the problem is one of commitment perhaps upping the ante would help. On the other hand, perhaps the problem is who selects/retains the staff as well.

Also, forgive my heretical bent, but is there any truth to the decline coinciding with the coed student body and more liberal leaning in the institutions?

This ties into another thread that pointed out that USMA officers tend to do their four years and split. Perhaps they were not as prepared for the demands of military life as they thought the institution would prepare them? (Not relative to other sources of commission but to their expectations mind you.)