And if I did that whole 3.6 to 2.52 math thing correctly, theoretically a 6' tall man at 1000yds would no longer be 2 mils, but 2.857... mils, and at 500yds he'd be 5.714... mils vice 4.
Not trying to start a flame war or come off as abrasive here, just asking if it ain't broke, why fix it?
I've personally found that reticles with 1/2 mil marks work great for being able to make easier calls. I've had a few Leupy MK4s, with the TMR reticle, and the reticle was great, especially with the .2 mil subtensions after the 4th or 5th mil (cant remember which off the top of my head, sorry).
Better yet, since FFP scopes that mil correctly on any power, that also come with turrets that adjust in mils start at about $600US, why not invest in a rangefinder? I'd be willing to be that a rangefinder, coupled with shooting at variuos distances to know what your hold/dial in will be, will result in a lot more hits out in the field. Just my .02.