A new generation type which will only spawn the structure once per world at the spawn. It would be useful for modpack creators who want to provide a prefabricated base for the player and story but don't want to use lockdown for repetitive worlds

That's already a thing. Check out the mod config :)

Fair enough, I couldn't find any info in the wiki about it

Found the config for it, cheers

True that. Not anymore! ;)