1. A simple rumble-stick from the gameshop around the corner has primitive feedback, weighs almost nothing more, and is simple to install.
2. A simple escape-button, that functions analogue to the complicated procedure of switching off 2 prime and one sec, thus giving instant direct law, would be just as simple and cheap enough to install
What about a gigantic parachute system when all your feed back devices fail to save the day?
All the feed back in the world didn't seem to save several other accidents with similar circumstances, I know, I should grow up by pointing this out, sorry.
Many of the totally preventable accidents lately (and several old ones), had to do with bad pitot information displayed, why not design a system to deal with suspect airspeed information, maybe some automatic system that changes over to a synthesized indication, just an idea, because the feedback systems in place now seem to be overruling the obvious attitude information which pilots don't seem to pay attention to anymore in modern push button flight decks.
Warnings, shakers and alarms going off just complicated the situations.