Just played around with the GoPro Karma. Total meh, very unimpressed. Thing weighs a ton, the batteries are larger and heavier than the Phantom/Autel, the fold-out arms feel like they'll snap off if you sneeze near them, and while it is indeed smaller overall than the "regular" drones, it's still pretty darn long (longer than the regular ones, in fact). No-fly zones cannot be turned off, no matter how or when.
The new Hero5 Black looks lovely though.