I am afraid the admin will get an approval/flag notification very often, only because users posted links or linked images. Could this be a little bit overwhelming for small forums?
Is it possible to restrict links only for embedded images? It might be possible, that NSFW or similar from not trusted sources could be shown and that only specific image hosters are allowed. This could be helpful, because users often post links to their own websites or trustworthy/harmless websites and maintaining an allow link list would cost a lot of time.
luceos it overwrites user bio's if it identifies spam
What does it write into the bio, if it finds spam there? Will the whole bio be deleted or only the link, mail, etc.?
luceos it identifies the language used against the language packs installed
What exactly happens if it will find a word of another language, which is normally used in the local language? Will it be triggered if it finds single foreign words like "Gesundheit" or "Kindergarten"?
luceos fof/spamblock - optional, when enabled immediately deletes users that open discussions with spam subjects
Isn't deleting a use a little bit too much? Maybe it was a false alarm and deleting an user account for this sounds too drastic.
And might a user be in danger, if it gets detected as a spammer? For example, if the username is spammer, but user isn't a spammer and provides a real email address, is the email address then uploaded and flagged as spam?