With These Features Combined...
I think once wireless devices and accessories begin to have more open integration with each other, a combination of motion powered handset, super small ear piece, and display [HUD] will become mainstream. But only when the technology becomes very simple to use and can be recharged through the same methods as each other.
Of course some of this technology is not available just yet, but when it does eventually make it to market, wouldn't you want to be able to use it with all your other gadgets without a lot of hassle?
So note to device manufacturers, carriers, and service providers: If you bridge the gap between your products by allowing the features your customers paid for to work the way they are intended, I think we can all be happy with the results. Because crap like this will only lead to "technology of mass confusion".