Feels like a lot of current hacks are about how to overcome the limit of a totally optional software prison rather than be creative with what can be done with the unexpected combination of software and hardware.
That's not actually progress but a regression due to walled gardens.
Thanks for opening up ... but also why even get to such a bad spot in the first place?
It's not that hard to write a webcam kernel extension now, apple iirc provide a sample (but I think I based mine off someone else's implementation for passing buffers around to the sink)
Here's mine, turning a kinect1's depth stream into a camera device
https://github.com/NewChromantics/PopKinectMacWebcam
So in this case, the hack is unneccessary, there is no limit of which you speak