Why do we even need that?
What's all this multitasking craze?
If there's one thing that iPad does well is to let you focus and enjoy what you're doing, without any clutter around and behind it.
That's the beauty of it.
Why on earth would you want to create a stressful experience on a device meant to be enjoyed?
It's really sad.
I know I'm going to get blasted for this, but my girlfriend switched from iPad to Surface simply because of the multitasking feature. She needs two apps running at once to be able to do her job. The Surface provides that solution for her.