Totally agree. IoT has been a big missfire, but you could make a good argument for these kinds of products that don't change too much about the existing use (the mirror is still a mirror) but just add tons of cool IoT features.

I say you kickstarter it as an open-source backed product: produce and sell them in volume and publish the guides to make your own if you want.

Nope, I just wanted to see if I could make it. Biggest problem for this kind of stuff is the power source. I agree I can totally see an e-ink displayin my bathroom/hallway in the future.