From Part I
As for the bad parts, I'm sure there were plenty of YouTube video about them. But on a personal level, I found that the shutter lag - especially capturing RAW - can be a problem. This made the GoPro not the ideal camera for street photography. The moment may have passed on by the time the shutter clicked.
The RAW file also wasn't universal. I wasn't able to open it on my main workflow - using Aperture. Best to capture in jpg in my opinion.
The captures may be oversaturated for some people. Luckily, using Aperture, I was able to dial down the colour making it more natural. This may be a plus though if you were doing architecture or landscape. On my cityscape photos, it worked a treat. I felt that it was a feature.
Finally I find opening the doors for the charger on the GoPro could be a bit tricky. I supposed that was the trade-off since the unit on its own is water-resistant up to 10 meters. With the right technique, it was manageable.
On balance, I was more than happy with my purchase, especially as I got it at a discount complete with a free memory card. It was hard to understand why GoPro as a company was struggling since the product was great. Moving into drone sector was a sensible move but maybe they were not able to complete with the likes of DJI. Hopefully they would continue to survive and come up with Hero 7 some time in the near future ...