Ok, not sure if DJI coders bother reading this site but I've not seen a thread with a dedicated wish list from P4 pilots.
Here are mine in priority order:

1 - FIX the quad height drop tht everyone is experiencing! PLEASE!
2 - Able to turn off VPS so I can fly closer to the water surface like I did so many time with the P3Pro
3 - Improve battery times to reach 28 minutes of usefull flight (filming, normal flight, not hovering only)
4 - Introduce a digital zoom capability? Not sure if that needs a hardware change but, hey, would be great if we could zoom-in digitally like some camcorders do
5 - Start listing ALL the changes when releasing a new firmware, transparency is key to win your customers!

Any other ideas?  

fix the tilted gimbal issue is my number one request - fed up with cock-eyed horizons !

Would like to easily export GPS track to GPX.
Take a picture while also getting video like Parrot
Make VPS allow P4 to change elevation with ground surface rather than just stop upon detection
Add automatic video feed detection of Morel Mushrooms in the spring time

I forgot to add +1

CORPORATE TRANSPARENCY!

+1 Make VPS allow P4 to change elevation with ground surface rather than just stop upon detection (or have switch to be able to turn on follow ground elevation or set min height off ground unless manually lowered)
+1 Take a picture while also getting video (if possible)
+1  FIX the quad height drop
+1  Able to turn off VPS
+ Fix Range issue
+ Fix Crashing Apps
+ App remember settings after firmware update (at least RTH Alt)