Didn't know about @ecency not making it easy to set beneficiaries on posts, maybe something they can add.
The other idea is basically an account that would forever stay staked and compared to hbdstabilizer or burn posts, it would start taking a share of the curation rewards pool vs just author rewards pool like the others do. You can imagine that if people like the idea, send it hive for votes towards deserving authors or delegate to it for votes or generally upvote it's comments/posts to let it grow cause they think it's doing a good job curating/etc, the account would keep growing and growing over the 10+ years we have left of inflation until it drops and stays at 0.5% annually. It could become a big account that provably can't be unstaked and keeps taking a large pie of the curation rewards vs other stakeholders.