I couldn't agree more, Android updates are extremely painful. Which basic functionality got broken, hidden, degraded, or removed this time? What new features

I couldn't agree more, Android updates are extremely painful. Which basic functionality got broken, hidden, degraded, or removed this time? What new features that I don't want are now in my face? Which elements got redesigned for no reason, and will be redesigned again next update? I would pay good money for an option to get long term security updates with zero other changes.