The drone would be a big hit if Dji didn't just blow the roof of with their incredible mavic pro that came on the market this week. It is by far the best consumer drone available and smaller than the go pro.
The GoPro is for when you want a drone that can carry your camera that you can also detach and use with their stabilized handle, which you can then take the GoPro out of completely and use on it's own.
The Mavic is for people who want a smaller drone.
Both are good tech, and I plan on getting both of them within the next year, but the GoPro one is going to be my first of the two.
Based on this video the price, stability, amount of features and just about everything is worse than my old DJI Phantom 3 Standard.
I wished GoPro Karma would be good but based on reviews I'm not impressed and probably end up going with Mavic Pro even though I just bought GoPro Hero 5.