Long time no speak :-) I am very glad to see that your product is evolving well and yes ! Becoming plug and play. Excellent, mate !
May I ask : why do you limit yourself to the "PIxhawk companion" on your Internet site ?
Is this because the communication between AP and 4Gmetry is mavlink based ? Because I believe that more autopilots use mavlink. Also, the pixhawk has many "improved " versions like that excellent French version, but also cheaper chinese clones which are certainly as present on the market as the pixhawk itself.
If the video does pass through your invention, than all FPVists are potential buyers, with or without mavlink (for instance I could use 4Gmetry just as a VTX, and some LRS uhf TX/RX)
Just my 2 cents. I may have misunderstood something, sorry if that is the case.