I love this concept, I just really want one with an e-ink screen instead. I think there's a great niche for "embedded" devices around the home -- weather readout panels, lighting controls, music player, intercom, etc. -- but glowing rectangles mounted to the wall are just too... glowing. E-ink panels is where it's at, and a Raspberry Pi powering it is perfect. Unfortunately, the only real general-purpose e-ink tablet…
My main use case: when I'm following a recipe, my devices go to sleep in a minute or two and it's a huge pain in the ass to wake it up and type in passwords while covered in sauce or flour or raw meat or whatever. I've started printing (or writing) recipes on blank paper just so I can move them around the kitchen and not worry about things going to sleep on me.
The press would eat it up with snark (Silicon Valley invents recipe cards. ha ha ha ha ha so clever!), but I don't want a rolodex full of cardboard that I have to stick in a drawer somewhere and sort/manage.