Old Fat One,
Sorry, but I still can't see why it shouldn't be as simple as I suggest. You are quite correct in that Bader would not be allowed in, and your unidexter AEO would undoubtedly struggle to pass and probably be invalided out. Are you seriously suggesting that it should be any other way? The RAF is shortly to be reduced to 30000 people is it too much to ask that they are all fit enough to deploy?
A basic level of fitness is all we're talking about here, enough to cope with a bit of heat, a bit of lugging stuff about and a bit of running to the nearest shelter without being no use when you get there.
I am frankly embarrassed by some of the lard arses or sickly children that advertise themselves as members of the RAF.
Yes it's a pain, but the RAFFT is impartial, well within anyone's capability given a little application, and ultimately necessary. The main source of resentment is with the wheeezy folk with a sick chit from matron who will continue to serve and never pass it.
Fatties are unsightly, I don't care how "bubbly" they are.