I understood your suggestion, but the SIMPLE way to handle deep stalls is not through software but by LESS reliance on automatics/cradle-grave protections and the like and just encouraging basic flying skills - which appear to have been absent in this 'first level' airline. The more the psychology encourages 'reliance' on something telling you you have screwed up, the more likely it is you will, as opposed to making sure you don't, and that is ignoring all the pitfalls of a software based system reliant on voting on multiple sensors.