Well, while we're rewriting BUPERSINST 1610.10, here's something else. Why do we have to stack rank people anyway? No JOPA is alike. Most squadrons on every flightline are more or less average. Yet some happen to get a critical mass of rockstars and hit it out of the park for a year and a half until things change. Others collect chuckleheads, turn into a flying circus, and end up firing off HAZREPs or SIRs at the cyclic rate. We all know which squadrons in our airwing and/or community fit those descriptions. So why do we give equal weight to the #1EP player out of the Keystone Kops squadron and the one from the squadron which torched ARP and sent half its guys to the RAG? Is it not likely (though not guaranteed, of course) that the hypothetical crap squadron's number 1 JO might very well be a pack MP player in a better ready room?
As an example, don't the Marines set it so that the CO has the discretion to rank each of his Marines as he thinks they rank in the entire Corps, rather than arbitrarily stack ranking people?
Edit: Another analogy now that I'm a dirty Reservist looking for civilian employment: Jack Welch brought our mando distribution system to the corporate world and mandated that GE cut the bottom 10 percent on every eval cycle in their company. A lot of companies adopted it, including Microsoft. It's been blamed for a "lost decade" in Redmond, because supposedly rockstars would refuse to work with other rockstars. Why? Only one of them could get their ticket punched, and the other would get screwed. So mediocrity reigned as the best talent never got to work together. Oh, and the backstabbing and politics in the company were notorious at that time, because as has been mentioned, people climbed over each other for the golden ticket, so as not to get canned. And thus you get Windows 8. FWIW, I'm under the impression that most of corporate America has canned the idea because it didn't work.