That zapper looks very simplistic, can it even adapt to the kind of button configurations the FPS games require these days? I mean sure, for arcade shooters in which all you need is to aim, shoot, reload (and maybe duck), that's plenty sufficient, but how about titles where you can drive vehicles, have secondary weapons/equipments, etc?
The touch interface for Zelda looks pretty astounding technically, but it seem to have gotten rid of the hand-eye coordination required for these games. The play style has been simplified down to just a point and drag, I don't know if that's a good thing.