Same, but the front is important for airflow in the Framework Desktop, so I don't think covering it with an e-ink screen would work. But maybe with some space between the screen and the fan intake?
Yeah, it might need some kind of a riser to prevent airflow restriction. Of course, I suppose it depends on how many squares you cover.
The other idea I keep noodling about is creating modular gears and perhaps using a servo for a really cool dial indicator instead, but alas, it hasn't made it further than my ideas bin.