Removing the wiper stalk. That decision killed one German driver who was busy fiddling in the menues to figure out how to get the wipers to max when hit by heavy sudden rain (and yeah their sensors don't work well, because they saved money by removing the industry standard IR sensor for rain and tried to rely on their front-facing camera).

They have changed it now so if you push the button to do a single manual wiper stroke, the wiper speed icons pop up on the left side on the screen so you can then proceed to set them to max, but it's still a ridiculous decision that is dangerous. I guess it doesn't rain in California so nobody in charge bothered :)

It's happened many times driving that I have for example overtaken a trailer that splashed an infinite amount of water on me while passing, and I had to hit the max-wiper just to see anything. A delay of a second there could mean a crash..