The premise that I'm (probably) rejected because I'm too good, while flattering, doesn't hold much water. If a school operated this way, they'd never improve their stats, rankings, etc - in fact, if anything, they'd go downhill. The reality of it is, for some reason, they probably didn't like my profile. There are a couple of possibilities - my why Cornell was a bit weak, I never did a campus visit, I did the essays in a day (so they were OK but not great) or maybe I didn't play up a certain aspect enough. There's also the simple reality that applications are a crapshoot - it's so subjective, who knows why they might pick one over another.
I suppose, looking at a calendar, its possible for me to still get an interview (the decision date is Nov 17), so I imagine the true drop dead date is something like Nov 8. However, given the timelines other people posted, I don't feel hopeful.