This is probably the one of the best editors out there and the powerful non pro version is totally free. Check it out.
Blackmagic Design DaVinci Resolve Blackmagic Design: DaVinci Resolve 12
I fully agree video quality not acceptable for me but the stills are okay. It's going to take a much higher video quality before I'll post any video taken with mine!
Make sure you've properly discharged the battery. An issue like yours is easily caused by missing or thinking you did properly discharge it enough already and you probably didn't.
Be nice to have pan+tilt one on each side and reversible. The review features currently used on the right wheel should be assigned to some other part of the DJI Go App instead of the currently mapped method! This would make the controller much more functional especially for single operator uses!