I miss the true gestures, like where I could play and pause media by simply drawing a pause symbol with two fingers on the locked screen.

For me it happened whenever that got shitcanned.

Then when they took away the one touch toggle WiFi or Bluetooth from the Quick Settings panel. Ain't quick anymore.

Or when they stopped allowing me to have full control on the color palette of the accent colors.

I hate getting OS major release updates now too because they needlessly shift and futz with so many UI/UX stuff in the OS.