"It is like using the FD, with all its modes, but the FD bars are "armed", so when you deviate from the target speed, v/S, track, etc... by a given amount, the FD bars come and you are prompted to follow them."
Not sure how this is different from directions given now?
If I recall AF447 correctly, the "Stall" warning sounded for minutes and the pilot kept pulling back on the stick.
It is perhaps a case of changing the way the aircraft communicates with crew such that they can still fathom out what's going on, or at least unfreeze enough of their brain to follow guidance.
What would be a better attention getter?