+1 SO MUCH After two years I couldn't understand them. Sometime one notification appear, then it disappear, is it in the bottom stack? No, it just disappear. Also when there's many of them grouped, will tapping expand them? open the app? It's random.

But mostly, on Android, having quick actions on notifications. Receiving a useless email? The "Delete" action is right there. Boom, done. Move on.

In retrospect, I think it's why I find Android so functional. Just from the notifications you can do everything. No need to unlock your phone and end up distracted.