I don't really want an e-ink "monitor" as that does not really play into the advantages of an e-ink display. By the time the e-ink display is uprated enough to act as a monitor It feels like a lot of the advantages of e-ink are lost and the display server does not really downrate enough to utilize e-ink's strength.

But an e-ink "terminal" would be nice, not an actual tty but something more like a tablet form factor that has a few buttons, little to no internal smarts and you can push images to it.