I know this is not a huge thread or the most useful ever, but i didn't wanna swarm threads with potentially irrelevant info.
But anyways, the camera improvements are great. You used to have your frame focused and the shutter came too long after the focus so you often had blurry pictures. Now you actually notice that it refocuses at the exact moment of the shutter (obviously "exact moment" is somewhat an expression). That alone improves the quality by a ton and most likely what they refer to when saying they fixed "stabjlity".
So after you flash to 4.0.4 don't fear to use your camera anymore!