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.
It’s going to be incredibly necessary in the long run. Decentralized means some proportion of important communities are going to be on servers that will eventually be shut down for various reasons. Not everybody who’s running an instance now will run it forever, but there may be communities with important conversations that folks will want to preserve.
Mastodon has account migration and Lemmy community migration should work similarly.
And Lemmy should also have account migration.
I made a tool that does this until we can get something baked into Lemmy itself: https://github.com/CMahaff/lasim
There are a handful of other options out there too if ya search for em. Mine backs up / copies subscriptions, blocks, and a handful of profile settings.