thirdhill, my impression is that the greatest change of late is that Cambridge asks for A at A-Level in the humanities and Oxford doesn't. It's under pressure though, and the Ox Central Admin def. wants us to start asking for A.
I haven't noticed much Ivy League braindrainage. Despite promises, most are very deterred by the fees.
Yes, it's much BETTER that colleges and schools DON'T have the cosy relations as in days of yore, but this also means there are NO safe bets for weaker applicants anymore. No places for jolly rowers doing forestry.. though I do know a jolly rower who was being courted by Yale.
I mean, even Mansfield is a tough ask nowadays. One college in my subject interviewed 40 plus second choice people this year and only took 2 of its original list of first-choice applicants.
I know from outside Oxbridge looks like the place with power, but from within some are hagridden by Norrington Table results, and some colleagues are put under a lot of pressure about this.