Maybe a model where upvotes and downvotes can per instance be federated either publicly or aggregated? So an instance admin could choose to bundle together the vote totals and push them to other instances and it would just show the total number of votes on comments and posts by people on their server rather than the individuals. And if a federated server acts up and sends bad vote totals, the instance could be blocked for it as a trade off.
Maybe a model where upvotes and downvotes can per instance be federated either publicly or aggregated? So an instance admin could choose to bundle together the vote totals and push them to other instances and it would just show the total number of votes on comments and posts by people on their server rather than the individuals. And if a federated server acts up and sends bad vote totals, the instance could be blocked for it as a trade off.