I fly stone-age Pipers, so have to operate carb heat and mixture controls myself.
So, let's say said systems get replaced by automagic systems. For resilience, youŽd need two of each systems. YouŽd need an indication to the PIC of one system malfunctioning. Likewise of both malfunctioning. YouŽd need checklist procedures for what to do when that occurs. Not worth it. Keep it simple. My lawn-mower has run for 35 years w/o problems.
Hahaha, I'm in the software industry myself, and am responsible for hundreds of thousands of peoples assets and I know what can go wrong.