Hi,
Before the day the Systems becomes PERFECT and EVERY possible situation is simulated and TESTED, as a designer i would prefer to deliver planes with "small resources" (like AoA) capable to save POB.
gums:
But when the system starts to revert to backup modes, then the thing might be the best friend you have, especially for a pitot-static problem.
Mac
PS
Is seems something like the AoA indicator (proven in EXTREME conditions) lies in the "Tectonic Fault" dividing who:
1) Think a System (and the crew) is capable to work always as expected.
2) Known (battle hardened) that sometimes you must be able to do the "necessary" to survive.
Airbus SAS or Air France or authorities (or AF447 crew) made what was
possible:
1) Maintained hundreds of A/C relying on OBSOLETE AS sensors
2) Didn't replace the WORSE obsolete sensors in time
3) Didn't anticipate possible PROBABLE ("recurrent") scenarios.
4) Didn't act with it's authority capabilities
5) Didn't even understand what "was happening" yet before entering WX
Perception "means" survivability:
Thousands of professionals IMO didn't act proactively.
And Murphy Law again put the toll for that collective failure (merely a probability result).
PS
Well, if AoA gauge has no place in the cockpit at least his data could be used to "inform" the stall type.