Put more icons on each page.
A darker screen for better nighttime viewing.
Statusbar battery icon replacement.
Disable Frequently Visited Sites in Safari (iOS 8+)
App Switcher & Control Center in one
Snooze or Stop alarm on lockscreen
Organize your Settings with Tags.
weather info as slide to unlock text
Let Reachability do something more.
Blur effect for Camera UI as it should be.