Sounds like you want a classic car resto-mod.
FWIW, electronics are the basis for those "amenities" we all like - as well as the reliability of modern cars.
What electronics are unnecessary? Back-up cameras? Blind-spot warning devices? Lane position monitors? One man's trash is another man's treasure.
I know my wife, who can't parallel park to save her life, could use some of those features.
Personally, I don't see the downside to having most of them. Other than the fact that they may eventually require some additional (electronic) tools to diagnose and repair.
Unfortunately, eliminating the electronics also eliminates a lot of those desirable amenities you referred to - and a lot of the reliability of modern cars as well.
I always thought it was funny how my dad ranted and raved against computers - but still bragged about how his Buick Roadmaster got over 25mpg - due to its engine management COMPUTER!
There's no free lunch - you can't have your cake and eat it too...
JMO and YMMV.