If I currently fly FPV what does this drone give me that I don't already have?
Unfortunately, not a whole lot to be honest. The performance is great but still not as good as pure FPV drones. The extreme low latency in a true racing drone still offers better response and handling. The gimbal, 4k camera and software stabilization are great but nothing that special and not interesting for FPV freestyle or racing. Flying in low latency mode on the new FPV drone means your DVR is unusable as the DVR video is also forced into low latency mode and therefore blurry on the sides. High quality mode is great for DVR but adds latency and therefore the drone doesn’t feel as responsive. And finally, you can’t crash it without destroying it like a typical carbon fiber FPV drone. The durability of the new DJI FPV drone can not compare to that of a carbon fiber racing drone. If you fly fast and agressively, you will crash. So really, unless you want a ready to fly all in one drone you can grab and go fly in low to medium risk environments when all your other drones are on the bench, then I don’t see a whole lot here for existing FPV droners.
One thing that *some* existing FPV pilots might want by getting the DJI FPV... the one button emergency stop / normal / sport mode. Not so much because they want to actually fly in those modes but in a conventional (ie. every FPV until now) FPV you really can't auto-hover or take your hands off the sticks. Once you start flying there is no stopping. The DJI FPV lets the pilots setup a run for a video shot, pause in the air, even take the googles off... then make the run. Or if someone walks up to you while flying to ask about the drone... pause, talk to them. Get confused and disoriented... pause. Want to hand catch the drone because of terrain in the area... switch to normal mode and hover etc.
Now this won't make someone get a DJI FPV for acro/freestyle... too many downsides obviously, but it might complement the collection when you are using a drone to take dynamic cinematic footage of the landscape or buildings and want the flexibility of a drone that can switch back and forth in its behavior to help you make the flight a success without the stress.