Twol8, don't disagree with anything you said. The point is that the requirement for a complusory 3x50 does not accord with what CAS is reported to have required and seems wholly impractible on an organised basis unless fit to fight comes first and fly to fight comes second.
As soon as you make it a complusory set then the whole rule set changes.
If you read what I posted about Edward Leigh you will see that there will be no money for facilities.
The acid test is whether you can pass the fitness test. Where I could do the 1.5 mile run, in time, and without training then demonstrably I needed to take no additional exercise; others couldn't and didn't. If you want to improve general fitness then indeed the test should be made harder year by year so that people do have to do additional exercise.
However two things remain. One is why are there sex differences. The other is what standard? The new tests have not, as far as I know, been decided.