maybe add one resistive touch screen ?

Its a bay trail and probably uses Broadcom chips, which means you won't catch me going anywhere near it....

My take on the biggest hurdle with all of this is the keyboard.
I have a pile of those micro wireless and bluetooth keyboards
which I have tested and used,
but to be keenly usable they must be available for any boot menus - which precludes bluetooth.
This means wiring one of their adapters in permanently,
which should not be all that difficult.

Lose the Baytrail and Broadcom failures and this might be a path...