Number seven is one I go back and forth on. Some schools of thought propose that apps that you use often should be left in recents so that it's easier and theoretically better on battery life, but I'm not sure. However that is how android was designed, or there would be no purpose for a recents action/screen. idk but good video nonetheless.
I just got my new PRIV yesterday, & have been watching certain parts of this video over & over again. When I go to my settings, I don't see vibration anywhere under my apps?