Currently:
- pinch to return to homescreen
- four fingers up to multitask
Given how iOS 8 displays these gestures, it would be much more natural to use the pinch gesture to start multitasking. Returning to the home screen could have a new animation in which the app slides away in upward direction and vanishes.
The four finger gesture is one of the few things that worked better in iOS 6, I used it all the time. Since iOS 7, it feels weird and I don't use it anymore.
- pinch to return to homescreen
- four fingers up to multitask
Given how iOS 8 displays these gestures, it would be much more natural to use the pinch gesture to start multitasking. Returning to the home screen could have a new animation in which the app slides away in upward direction and vanishes.
The four finger gesture is one of the few things that worked better in iOS 6, I used it all the time. Since iOS 7, it feels weird and I don't use it anymore.