Notification Center that Isn't Trash
The iPhone Notification Center is a wasteland of notifications that includes too many notifications for things you've already seen, and still makes it incredibly annoying to dismiss a notification.
Looking at the Notification Center now I see five notifications for Instagram, including four that I saw in the app five hours ago. Clearing notifications still takes two taps on a small touch target, which means the Notification Center ends up overrun with useless notifications that we've already seen and dealt with.
Android notifications aren't perfect, but it is easier to see what the notification is really about and to dismiss notifications that you no longer need with a swipe.