The major deficiency in the GoPro camera system was, in my opinion, the lack of any sort of display on the back of the camera that would visually inform the user whether the camera was recording or not. I guess lots of people had similar complaints and so the folks at GoPro listened.
Now I was thinking of something as simple as a blinking light, but GoPro had bigger and better ideas. They have just released the LCD BacPac, which is essentially an add-on LCD screen that clips on the back of the GoPro 1080Pp HD HERO unit, providing video playback capabilities as well as camera setting info.
Mine is on order and I will provide a review as soon as I get it and can try it out.