There will be a formal document listing everything anyone would need to do their hacking, complete with the warranty disclaimer. It will contain very accurate descriptions of all connectors and spare pads on the PCB with their voltage levels and any specific requirements. There's also a block diagram schematic devs have now that shows how everything is connected together. I'll clean that up and put it into this document. It will be detailed enough for any hacker, University project or modder to do whatever they need, short of building one on their own. My plan is to have it ready with the launch of the device or just after. I'm a bit short on time to do this right for now.
I still want to get hundreds or thousands of spare connectors that plug into the A/V port to help people out if they need them. The part is no longer available for sampling or small orders so this might be the only way.