That would be cool, but I wouldn't hold your breath.
I got a mechanical key keypad recently, that was a disaster! Stupid OS X would freeze up the keyboard when I hit the Num Lock key on it. It wanted to treat it like a full sized keyboard and wouldn't recognize it as a keypad.
Don't need any. You enter data by rolling it up and down on your desk and you move the cursor and select by tapping both end as you would a tam-tam... Think different.