Is the balance of a small GoPro style gimbal not very important due to their light weight, or is it still important? If it's not well balanced, what are the side effects? As I was looking into whether the HERO4 is different than the HERO3 I came across this video where you can clearly see the COG of the two are different, yet they say "it doesn't matter":

https://www.facebook.com/video.php?v=970617442965083