Analog I/O is extremely standardized and simple.
Digital I/O is entirely board dependent, and you're looking at a very short list of very well-paid people who have significant experience working with any specific board at industrial scale.
Cool idea though.
The padded portion of the headband on 770s can be very easily and cheaply replaced if you're worried. Even so, simply hanging them by the pad won't damage them. I've had T70s and DT880s for something like five years now, exclusively hanging by the headband, and they're fine. Literally not an issue.