Imperium HD cydia tweak brings a completely new and better app switcher for your iPad/iPad mini based on Mac OS MissionControl & LaunchPad.
With Imperium HD you can kill all background apps with just a single swipe, take a quick photo, get song lyrics, search google, send an email, toggle wifi, airplane mode, location services, bluetooth, scroll all applications in a list etc. from the lockscreen, home screen, inside an app or basically anywhere!
No new icons are added to the homescreen. Configure options from the settings app.