The Only apparent downside right now with a platform like this is that the gimbals are camera specific, however it will accept third party gimbals that may require more tuning to get running smoothely.

You can get one at http://store.dji.com/product/spreading-wings-s900-a2-zenmuse-z15-gh4-hd

As I see it, this is an advancement on UAV design in terms of a stable platform that still features some modularity (when compared to hobby grade UAVs)

• During news coverage of Australia's 2009 bushfires, ENG crews needed small CMOS cameras they could pack away, run with, and if necessary lose to the flames;
• Journalists to trouble-spots choose easily-concealed cameras which until now have been either too expensive or which sacrifice image quality to conceal-ability;
• We have already seen how the GH2 is an affordable, high-quality choice for hexacopters. Not only is the GH2 light enough and the image good enough, but in case of an accident the camera can be crashed and damaged, but, like the copter itself, the footage can be valuable enough to make the calculated risk worthwhile.
• A feature film shot on RED or Alexa might need footage from a crash-camera which still cuts-in with the HD footage

DSLR in a Crash Cam Box Made out of a Pelican 1300 Case

For most of us, our GH2 is a precious, one-off acquisition. But, if a camera has to be crashed, it's best to protect it. One rental company http://revolutioncinemarentals.com/pelican-1300-crash-cam-case/ has a DSLR crash-cam case easy enough to build from a Pelican case, some rods and T-receivers:

Read more at

http://www.hurlbutvisuals.com/blog/2012/03/crash-cam-filmmaking-inside-the-box/