This is still pretty appealing - I could stand to put static or near-static text there. I'd probably want to add it to my current pair of monitors, though, instead of subbing one out.

That's about what I'd expect it to run too. The poorly written marketing material kinda ruins my confidence though.

Oh yes! At least Kobo readers are Linux and you can SSH in. You could even install another distro I believe. Some ugly hack could be rendering the display content on your machine and just sent the image over.

https://github.com/koreader/koreader uses Lua so maybe one could add some bidirectional or at least PC->Reader flow of data.

edit: VNC! https://www.joachim-breitner.de/blog/660-Using_my_Kobo_eBook...