Sadly there are still more people wanting to be pilots than can be accomodated - so some very simple filters are applied, which undoubtedly reduce numbers to a more manageable amount whilst filtering out some really top notch people. There is currently no incentive there for the RAF to change the flitering system - they still get all the applicants they need.
You have to show the RAF (etc) that there is some overwhelming benefit to be gained from changing the system - meanwhile a large number of top blokes (and blokesses!) will be rejected, tough luck I'm afraid.
On a more general point the human race seems to be a great deal more fragile than it used to be - how on earth 83%* of the human race suddenly became allergic to nuts is beyond me. How about a study to find out why so many people have allergies we had hardly heard of 30 years ago?
Dave
*83% is a figure I concocted, as everyone knows it's easier to 'prove' a case by quoting statistics, no matter how baseless.