Cabin crew are not selected for their analytical skills. Having seen cabin crew describe to pilots via the interphone the state of a cabin fire during a joint training exercise the last people I would choose to make an assessment of external issues with an aeroplane are cabin crew!
Why is everybody trying to re-invent the wheel? The Las Vegas incident was unusual but nobody died or was seriously hurt. Admittedly the flight crew's handling of the event was not exemplary but bringing in ever more complex procedures and rules to attempt to legislate for every conceivable set of circumstances is utter madness.