One of the most prevalent examples that affect me - it's a horrible system and most car makers are not able to do it properly, because the camera systems are not cheap enough to be good enough. Mercedes, BMW and so on do it relatively decent, but they've gotten so expensive, even the base models are out of my reach now.
This could go on for a while, but to make matters short: The basic idea is cool, but mandating it like they have makes it a nuisance and will make most people turn it off. All of the people I know that have a car that has that system turn it off immediately starting.