I think for a prototype you would need the developer kit, the one compute firmware and proper cables to connect the two together. I really think it's that simple on one level. Turning that into a commercial product is more complicated.
I am not sure what cables to get if they even exist.
I could help with making the software and doing component work. I could also make a few unique quick settings tiles to do things in the OS
If you want to ask me to help you my email is email@example.com
A mod that is hopefully easy to make that I need is a simple mod to allow a z to dock to a Motorola (attic) lapdock. This dock was originally for the Motorola Atrix and available through AT&T. At the time the Android OS was not capable of using it and a "separate" OS (pre-chromebook) was what you used while docked. With advancements in Android this lapdock would be a HUGE hit with no changes required.
A newer lapdock could later be released with an updated screen, battery, sound, usb3, etc and would also be a huge hit and finally wipeout any remaining distinction between phones and desktop/laptop computers once and for all.
I have 2 lapdocks and 17+ years Linux experience. I'm also a descent maker. I'm just not a developer.
Anyone interested in created this mod with me?