This could work under the route of hardware design for a linux laptop- but designed with maximum compatibility with macOS in mind.
You can't pre-install macOS or distribute software to facilitate its installation on non mac hardware, but the community would find the way on their own and shield the company from liability.
I should have been more clear. I was thinking of something along the lines of a hardcase which is already common for laptops, but has a usb-c port built in and below the case is a large set of batteries. Think a "Mophie Case" for your laptop.
