@reibeatall
Because of battery life limitations, most of the things I wanted to do with it weren't feasible. (For example, I would have liked a personal face-recognition thing, to remind me of people's names. But that would require the device to be always on, and always processing video. That'd drain the battery in less than half an hour.)

I still liked it as a heads-up display, but honestly, my Pebble watch is nearly as good and doesn't make my head feel lopsided.