Obviously it will slowly deteriorate, so you can only overshare and not be away for too long. That’s the price for having it trust-less. Stable and old nodes will also be taken down after younger or unstable nodes so both uptime and age is important concerning your example.

I have been thinking of proposing different “contracts” when sharing, say more or less if size, uptime, downloads, but nothing is done yet. Today it’s just roughly the same size.