. . . In my opinion, the right solution for their computer failure scenario is to figure out how to enable the pilot to resolve it, . . .
In my suggested, quick cut followed by four stage reintroduction, the last item to be reinstated is MCAS, but wait, can that specific software be divorced from the autopilot and indeed, STS? I assume it can't or there would be no need to ferry the MAX at snail's pace with a notch of flap down.
It seems the only way to inhibit MCAS would be by say, selecting a menu line saying as much, but that in itself is just a few lines of glitch-vulnerable code.
I get the feeling that the only safe design is for MCAS to be a quite separate black box with readily interruptible hard-wiring to the tail.