I have to believe that its a calculated decision on Marriotts part. If your nights all of the sudden drop off, it's one of two things. Either you changed Jobs and for what little it's worth they want to get keep what litte business you still will give them OR you've switched to HHonors in which case the prudent thing to do is not to lower your level of hospitality when you do stay. After a couple years, they'll give up and put you where you belong. My 2c

I think I've been a platinum for 5 years, maybe 6 and didnt make it to 75 once but they sent me a letter in like august, telling me that if I get 20 more nights, they'll renew and they did. The problem I see with it is it dilutes the platinum pool a little. I guess that's why they have platinum premier.