If I can get my BCP to hover as stable as my DF4, I'll be happy. Right now it sort of darts around. I can hold it in a hover, but once it gets off the "bubble", it takes a bit to get it back to a stable hover. A lot of this could be my blades, but I'm sure a new head design would help.
I do most of my flying in my office. As long as I don't go too high (papers blow around on all the desks) I'm all set. I can fly the DF4 around in little circles. Very slow and controlled flight - land on the conference table and kitchen island display, stuff like that. I wouldn't dare try it with the BCP the way it's handling now. My Lama 2 is easy in the office, and my DF36 is too big to do anything but hover in here.