Would you license this to others at a more affordable rate than e-ink? Lenovo has some e-ink 2-in-1 "thinkbook" laptops and might be a good partner... I'm sure you're considered this already.
Personally I am sold on the 'low distraction and eye strain' of e-ink, and would be keen on buying a computer with that display. That said, I'm more interested in a general computer running a general operating system (ubuntu or any linux) if I'm using something for daily work. Even if your own operating system can do these things I would be concerned with edge-cases for software I need for work, so for professional daily usage I need an OS that is battle-tested, and not based on a locked-down sandboxed mobile system like android where I'd have to fight the OS to do what I want.
I do own and use a remarkable, so I'm probably in the target market. I only use the remarkable for note taking, it's handy for freehand sketching visual ideas or concepts digitally, where typing or any sort of computer drawing with a mouse may add friction that gets in the way of getting the ideas down onto paper. The main advantage over paper is so I don't need to worry about misplacing the pieces of draft paper afterwards, when I revisit an idea months later.
I definitely don't want a tablet for typing code. If I'm going to carry around an external keyboard, I might as well just get a thin-and-light laptop.
I almost bought the aforementioned thinkbook with the e-ink display. Main reason I didn't was that I was worried about compatibility issues if I ran linux, since it's designed for windows.