Add a "floating desktop" mode
This is a pretty huge thing, but in an update perhaps a desktop style launcher mode could be added. What this does is adds a home launcher and a taskbar. Where a Windows button would be on the windows taskbar, could be a button acting as the floating icon. You could pin apps from your device and floating apps to the task bar and the main home screen portion. A button could collapse the taskbar to keep it out of the way in games and other similar programmes you would want the whole screen on. A few quick settings (WiFi Bluetooth ect) a battery indicator and a floating apps settings button should be on the right of he taskbar.
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hachiokuto commented
I use my old tablet with a keyboard case and mouse and kinda though this would be absolutely awesome.