PJ2
I genuinely hope that this is helpful
...I support and advocate for any and all ways to improve flight data recording
My concern is about important internal (volatile) info that would be lost (if you don´t record it). Without this approach you may face situations (during the investigation) that do not allow us to reach a (reliable) conclusion. One may argument you may just look to inputs and outputs of the “engineering black box” . But i suspect that in certain situations (when you are inside, participating of the feedback loop) and the System is under failure mechanisms you need internal data to understand pilot actions. I strongly suspect the way the approach the recording is (still) made is more effective to put responsibilities on crew errors.
Thanks for the extra motivation. In my answer i will try to contribute with some ideas concentrated (like CJ mentioned) on conceptual aspects.