I don't think any of the developers in LP would be interested in doing this. They're all busy with other things. This isn't an "official" answer because there isn't really any official spokesperson and if there were it probably wouldn't be me.
If any other developer is interested I'm sure they'll post as well.
Strange as it sounds, the project doesn't have any need of funds. It was deliberately setup that way. The infrastructure (forums, wiki, source repository, etc...) is all free or donated. I know of several times people have asked how to donate money and been told we don't accept donations.
I don't intend to discourage you and others from doing this, much of the functionality is already in LP. I haven't read extensively on the karma drone but below are a few thoughts off the top of my head.
Camera gimbal stabilization is already in LP, it has been for a long time. AFAIK you could take a small FC like a cc3d atom, add one of the small servo gimbals from eBay/BG, etc, and make a standalone handheld stabilizer. The same gimbal/cc3d plugged into a quad would also fly it in addition to stabilizing the camera.
If you want video display on the transmitter small video displays can be mounted easily. I have one of the eachine 7" ones clipped onto my transmitter sometimes.
Those are the main features I remember from my quick reading on the karma but I would expect most other ones are also already available.