For those who might wonder why eInk would be cool: Much better reading experience on the screen and insanely long battery life.
W.r.t. power: I don’t think EPD magically runs on less power _while refreshing_. So again, if you are mostly displaying static text and figures —- like in an ebook reader —- it’s great. If you’re constantly repainting the UI, less so.
As much as we may like to think programming is all about staring at walls of text in editor buffers we’ve carefully tuned for readability, IME at least I spend a lot of time switching between an editor, live view of my running app, documentation, log and trace views, etc.
Neither a slow refresh (4-10 fps) with major ghosting or a glacially slow (<1 fps) one that’s clean is actually a very good trade off with most modern workflows. Including ones that are nominally about text, like coding.