Apple implemented banner notifications in iOS 5 to make notifications less intrusive, and yet with iOS 7, Apple made banner notifications so tall that you actually have to manually dismiss them in order to access navigation pane buttons in applications. With this being the case, Apple kind of went backwards and made banner notifications intrusive in iOS 7.
If you want to make iOS 7 banner notifications less intrusive, there's a new free jailbreak tweak available in Cydia called TinyBar
by iOS developer Alex Zielenski that will shrink your banner notifications to size, as shown above.
The tweak effectively makes your incoming banner notifications no taller than your Status Bar, so if you're in an application and you want to tap on the back button to go to a previous interface, you won't have to worry about banner notifications getting in your way.
TinyBar is also customizable. The tweak adds a preferences pane to the Settings application where you can configure a few options:
You'll be able to enable and disable the tweak on demand, as well as enable or disable text scrolling (for longer notifications), hide or show the notification title, and hide or show the application icon for the notification. You can also use sliders to manually adjust the height of your banner notifications, adjust how long the banner remains on your display, and adjust how fast text scrolls across the banner.
TinyBar appears to offer a really beautiful way to shrink your banner notifications, so if you're struggling with the size of Apple's banner notifications in iOS 7, this is a great way to cut them down in size and add even more features to them. If you want to give TinyBar a try, it's available for free in Cydia's BigBoss repository.
iPhone 5 running iOS 7.0.4