You know what would be awesome? To control the camera's menu wirelessly (or wired actually) via an iPhone app. Bluetooth should do it if not a wired solution. When the camera is recording the app should be disabled from making any changes, and the metadata could also include geo-tagging if it comes from such a device like the iPhone (or android phones as well.)
Wait, should I patent this?
Surely someone has thought about it before, either way, it would be great to see it implemented, maybe in the next iteration of the camera.