ianwood, what you are doing is commendable. I appreciate your efforts and dedication to seeing things through. With that said, I would like to see you spend just a little more time explaining things. Please don't think I'm knocking any of what you have done so far. I think you should explain the problem as if you were doing it in front of people you know for a fact that do not know what a Multicopter is. Again don't get me wrong I followed you right along but several things came to. mind in the process.
Maybe this will help with what I'm kind of referring to. Your explaination was all oral. I would have liked seeing you start out draw it out on paper as you were describing it. In doing this you can point out how little or how bad it is doing what you are about to show in the video. Then I can better focus on what is going on rather than looking around at other stuff on the screen I'm looking at. Even blurring out all that's visible on the sides would have been a good thing. And another would been to try and capture you working the controller from behind while being able to see the P2 fly away in it's hook. That takes care of the guys that says "How do we know he is pressing 100% forward, blah, blah...
I personally would have like to see you in the very beginning do a Compass Calibration, and also run the controller a stick calibration. That way all would know that part of the P2 was done, and done correctly before hand. Doing these things show me that much more how serious you are at finding or getting the support to find a solution to the problem.
Now I know anyone can sit back and complain about how somebody does something. But I want you to know I'm only pointing out to help the cause. You might think the stuff I mentioned is overkill for what you're doing. But I think it is right on par with what needs to be done for everyone to see this is a for real deal, so to speak.
Whatever you do, keep doing what you're doing. I luv it!