I want a watch that has a few minimal buttons, bluetooth, a vibrate notifer, and no screen. Outwardly, it would appear to look like any other watch. Heck, maybe it could even look good!

I realize that the convenience of being able to see a notification without having to pull the phone out is nice, but I would much rather simply not miss any notifications. There's so much more you could pack into a wristwatch if you didn't have to worry about the screen, and still get tons of value out of it. With context-aware buttons, you could still control your music, remotely activate your phone camera, and all that other fun stuff.

I say start with a watch first, then see what you can fit in with that.