Well, I've waited to see if there were any more comments before we begin to work on a solution.
It's an expensive process, so we like to try our hardest to get things right the first time. This will take a while to build a tooling, prototype, and have some cables ready to go.
one more piece of information that we need to design this - can I have everyone give me a measurement of their Hasselblad back? I need to know how far in the connector fits into the camera. The one that I've measured is 19.6mm, to the outside shroud of the camera. So, I need 5 people to take their cable, plug it into their back, hold the cable at the point where it's inserted. Then, I need you to pull it out, and measure from your fingertip, to the tip of the FW800 connector.
Image of the measurement that I need.

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I'm looking to have replies from people who have different models. Please state the model, and the measurement.
I need measurements from 5 different models before we can move forward.