Two-way networking via Blue-Tooth would be cool, because not only would it mean there would be way less power consumed, but people could do the GPS data thing and the camera could be made to use the phone's GPS data, tagging the images (or is that what you mean?). People could also develop an app to use the smart phone as a remote triggering device too . . . and even a time-lapse shooting device, which could have all sorts of functionality, such as bracketing, for shooting HDR sets, longer and shorter delays, based on the time of day, etc. They could add Blue-Tooth control and triggering to their flash units and really offer something special, huh?