Agreed, this is a great idea and has prompted me to look into Pi 4b options as the form factor here with the touch screen has many other possibilities including retro gaming (Amiga). However, I will be looking at a larger 10.1 inch screen size rather than the official Pi 7 inch version so that it can double as a general tablet or even an additional screen for a PC.
Looking forward to further videos of the software in action.