Idea: if you mod a community on a lemmy.somewhere you should be able to migrate it to lemmy.elsewhere which would include all post & comment links being forwarded and subbed users having their subscription updated to reflect the new location.
I’m aware this would be a way down the road as user account migration alone is still not great but it would be a great feature for the fediverse to have to avoid centralisation and mod/server admin wars.
Yeah there HAS to be a way to cache all the posts comments replies etc at a certain point. Maybe every so often it flashes a cache on your server; saves everything; and lets you either create new with what you had OR move or.