While most of the IP at this point is open-source, if someone is excited about figuring out how to turn this into a kickstarter/actual sellable hardware product, I'd be willing to collaborate.
I use it for reading and annotating academic papers or PDFs of presentations, for which I find it superior to an iPad/Apple Pencil in just about every way except for sometimes syncing and transferring documents (this would be easier on Android platforms, though perhaps not iOS). That's still a little clunky particularly if you use Linux, but there are a variety of open source tools now to facilitate the process. The tablet doesn't natively store annotations as standard PDF annotations, but it's not a proprietary format, and this only matters if you SSH in to directly access files.
If you plan to get one now, consider waiting for or preordering the upcoming generation (July?).