Here's an idea I wish was implemented in BlackBerry 10.
You are in an app and swipe up and right to get to the hub. We all know how that part works. What I wish was possible was to swipe right to left from the Hub to enter the app you just left and swipe up from the bottom to go back to the home screen. Instead both of those actions bring you back home. One of them should enter you back into the app you just left!
Posted via CB10