Panasonic G95 has it, which is why people started the petition to add to the G9. G9 has a better processor, so they are figuring if you can do it in the lesser camera...Live Composite / Live Bulb is such a incredible feature of Olympus cameras that no one else replicated (and it is not complicated to implement), that my only guess is that Olympus have a VERY strong patent on the process.
They still can't do it though. The AF is easily distracted by the background. Phase detect is a much better solution for actions/BIF shooters.I'm thinking the will reserve this for a feature on the new GX10, and whatever will replace the G9. I am astounded they did the firmware upgrade that they did on the G9, I don't expect they'll do another.
I have wondered out loud why they did such an extensive change to focus ability in that firmware for free, and then it dawned on me. Panasonic has taken it on the chin for their action/BIF focusing. I think they felt they needed to prove they can do it prior to releasing a new camera. That's a pretty basic function, while live composite is more of a desired feature.
With no disrespect intended, you are wasting your time. Over the years many people have gone down this path. Japanese companies make such decisions largely based on market feedback and ROI. None the less, best of luck!A petition to add live image composite to the G9.