haha, fair enough - based on my first (fast) read-through, I think opting in will send all public (or in your parlance, hyperpublic) posts to your server for aggregation into the dataset.
I'm guessing that the opt-in process will look a lot like subscribing to a relay that just happens to never send any traffic back to my server
@djsundog Precisely yes and yes! You'll just add it as a relay