As I mentioned, I let a friend of mine take the tablet home, he kept it overnight. He downloaded a Dell BIOS & Firmware update, flashed the system & noted some performance improvement. But the power button issue still existed and the screen would not shut off without pressing it.
So I got it back and W10 downloaded an update, that update DID make a change but it would take me a few hours to find it. More on that in a moment.
My friend was able to delete that stubborn tile and altered some settings to help with battery power, but it appears nothing is going to improve battery length.
Apps, a disappointment. The Kindle App just crashes, it will not even open at all. In the JW App there are several features that you simply can't get to (I can on my W10 laptop). The eBay app is better than on Android as well as the Twitter app. There is no apps for the following - Weebly, gMail, browsers (optimized for mobile use) (free choice) music, PDF readers, photo viewers.
The Windows Store is worse than Apply for being 'company store only'.
Okay the positive. Remember the OS update I mentioned? Well it had a dramatic effect on the screen time fuction. Goto Settings>System>Power & Sleep> Set Screen 'on battery & plugged' in to 5 minutes. This setting was useless in my first testing. But after the update it works. As long as you are using the tablet the screen stays awake. So when your done close the case and 5 minutes later the screen turns off. When you want to use again tap the "Windows" button on the SIDE not the power button. The login screen appears, swipe and back at desktop. Just be sure to not press the power button.
Prior to the updates done by my friend and the push updates by Microsoft the time out mentioned above was pointless. The tablet still powered off after 15 minutes of non-use.
I hope this helps those who are still having trouble with the power button. Although the screen can now go off, turning the tablet off will result in the two+ 10 second power button presses to turn it back on.