Whats stopping spoof to Android? Possible workaround?

I was thinking this would be a otg deck for traveling. Adding ports galore (hdmi,dp etc) and being fully cast ready - you could dock it anywhere and take everything with you in a small form factor. Working in handheld mode on the plane, then casting/hooking to your hotel room tv with a BT keeb would be a dream. Given the customization inherent, this could blow Samsung Dex out of the water.

Thai chili curry.