Im on the fence about sending mine back.  I initiated the return process , but when I stepped down, I didnt notice anything too major.  I honestly compared to my 
Phantom 4 pro and it seemed slightly sharper throughout.  These images are definitely acceptable, but I am curious if another copy would be sharper, as something just seems off about mine, I just cant put a finger on it. 
The one thing that really concerned me is that when I steped down from F2.8 to F5.6 I notice the left side improve more then the right side, as if it was slightly off center..  *shrug*  Cant hurt to try another one, as I am entitled as a new owner and someone who has spent over 10k with DJI!
I wont lie.  I love the portability, but if DJI brings out a Phantom 5 with various lenses, I could go that route again.  Portability < Image Quality.......
I do regret selling my 
P4 Pro though, as it was sharper.  
Mavic 2 flies way better, has the 1080p downfeed and great battery life though...
*shrug*