This really doesn't strike me as that big of a deal. There are few other ways to earn MM status on other carriers beyond BIS miles. I imagine there were very few (but not none) people who were flying AA simply because their card spend or bank direct points also earned MM status. (I also suspect essentially all of that small number of people are posters here or on tobb.) I reached 1mm myself inadvertently on AA through some unusually heavy Citi spending back in '07. I did focus some spending on Citi's AA-branded card to hit 2mm in '09, but only after I figured this "trick" out. I really felt it was a trick at the time - and thought then (and continue to think) that the market for MM status has moved to BIS miles. While undoubtedly this egregious change will cause a few people to change their flying, spending and savings patterns, we are talking about 0.01% (or so) of the population. Against that, the problem of swelling of gold and platinum ranks is one that snowballs as more and more pax (or non-pax, in the case of the likes or Mr Pickles) reach the threshold. While one could suggest I am biased having already reached LT Plat and that there there will be some short term backlash at the margins, to me, AA made the right long term decision on this one. I also applaud AA's handling of the change, confirming all existing achievements will be honored and giving a multi-month grace period for those in sight of a hurdle.