Using Assistive Touch to power off
Lots of people use Assistive Touch due to mobility problems but some also use it to keep from wearing out the Home Key. You can also cut down on using the Power Key to power off.
Open Assistive Touch window - device - lock screen. Hold down the lock screen option there for a few seconds and the power off message pops up without having to hit the power key.
I really enjoy using the Assistive Touch.
iPad mini 4 Wi-Fi, iOS 9.3.1