Compact Overlay: auto aspect ratio, remember size, auto switch

I have a few suggestions for Compact Overlay mode:

• Open the compact overlay window with the correct aspect ratio
• Save the size of the compact overlay window, so I don’t have to resize it every time I switch
• Auto toggle to compact overlay when the app window loses focus, so I can switch to another app while I still watching a video very fast

I've written a sample app that implements these simple ideas, here is the repository: https://github.com/massijay/Auto-CompactOverlay-UWP