hg:-
Any able-bodied person can unstrap, walk to the exit and jump down a slide. I do not need CC to direct me to live, my survival instinct will kick in without your help, I promise, I am good.
You could be just one of 290 others, it could be at night, the cabin full of smoke with flames burning their way into the cabin and up to half the exits thus unavailable. But you'll be good, right? At the cost presumably of the other pax in your way, coming in the opposite direction, packing out the remaining exits and slides (are they deployed properly anyway, and who deployed them anyway?). The CC of course would be useless and have to be rescued by those like you who are orders of magnitude more qualified. Pity about the majority who died because of the lack of direction by qualified aircrew getting the aircraft fully evacuated, but at least you are good!
I've no idea what your day job is, but I repeat you would not be welcome on my aircraft and, yes, my word would be final!
I'm suggesting that the genesis of a fully constituted air force crew being jointly manned by aircrew was war. Destroy that notion and you open up a can of worms. With pax attitudes like yours a major in-flight emergency could quickly become needlessly un-survivable. That is where the difference between civil and military pax a/c cuts in. Civvie pax may well be orders of magnitude more qualified than the CC but will usually do as instructed in an emergency. With military pax you now have crew and pax from the same Service or possibly other Services. Either way they will hold ranks that may be less than, equal to, or exceed those of the CC managing an emergency. Previous discussions here suggested that problems would emanate from 'squaddies'. I am beginning to think that the real problems might come from opinionated aircrew such as your self :-
'Non-Traditional' Aircrew
especially as comments similar to your own were posted there.
As to the selection standards required, the courses imposed, ranks awarded; all that is up to the operator, ie the RAF. As to the regulator, the MAA,
every word is gospel, or bloody well should be!