I am speaking about the FC-40 camera alone...potentially on a V1 Ph. Clearly the whole FC-40 bird is the FC-40 camera on a V2...which only magfifies what I am going to say below.
The camera, and non-stabilized gimbal, AND (I think by reading the specs) transmitter comes to 40 gms!!! Compare that to 190 GMS for a Zenmuse+GPH3B....MINUS the transmitter, or 280 gms for EVERY OTHER 2D gimbal + GPH3B....MINUS the transmitter. That is a HUGE weight savings = flight time gain....almost 2 - 3 minutes.....AND you get decent but not pro quality or stabilized video, GOOD quality stills, workable FPV....AND it is all backfeed wifi controlled by your iOS device.....AND you don't have to buy the Tx/Rx/monitor FPV combo = $$ savings.
I think DJI looked at what was out there and at the need, identified a BIG hole between the full on, UNCONTROLLED, HEAVY gimbal/GPH3B/FPV setup and a lightweight FPV set WITHOUT camera or control.....and filled the hole.
I think, as an alternative when I just want to recreationally fly, have FPV, and maybe still get a picture or non-pro-quality video here or there...with a light bird and long flight times....IT IS BRILLIANT! Hoping the camera is offered alone soon.