Have an app take care of the notifications, their summary and actions to be taken. As well as setting individual notification options for each app.
Revamp the lock screen to enable action to be taken on individual notifications, using the slide metaphore already in place with the "Slide to unlock" button. I would love to add more functionality to my lock screen.
An inspiring concept with lots of good ideas.
Source: Apple, Please Hire This Man And Implement His iOS Notifications Already [Video] (Read Write Web).