One feature I'm fairly certain everyone was expecting were the android 12 lockscreen animations. The nice fade in when turning the power button on and when using the fingerprint scanner
They might not be Android 12 AOSP features, if it's Pixel devices you've seen these on, Pixel doesn't run AOSP it has extra Google software stuff on top. Samsung can implement similar if they wish but these Pixel animations probably aren't AOSP.
Yes I agree. The pixel 6 animations are amazing. I like how the always on display transitions to lock screen when you turn on the display. Have you seen it? 😍