The things that sometimes a brute force shake would be most helpful for and that I would pay money to have my phone do: 1. Shake to full brightness. When it's too bright to see the screen, it's a PITA to try to get the brightness turned up. 2. Shake to current phone call. Occasionally, I exit the phone app and it's frustrating not to be able to hop back over there quickly. 3. Shake to unlock. It's annoying to always be swiping when I just want to quickly check something on my phone. A quick shake would be much easier as an option.