Invisible UI setting

So, I feel this is fairly simple. Allowing a setting that lets you set a timer, like 10 seconds minimum, to 30 seconds max. When the timer reaches its end it makes the UI invisible showing the background only. Then to bring the UI back, you could tap the screen once or twice.

The timer would reset if the screen is touched, that way it does not go invisible while in use. This should only affect the main screen where you see your list of favorites.

Also, it picking up the phone could bring the UI back as well. That could be a toggle. Same as the 1 or 2 tap. A enable and disable toggle for the feature itself.

Just an idea, as I use live video wallpapers, so moving backgrounds, and it would be a neat feature to have. I do not think I have come across this type of feature before.