What I do fear is some script kiddy with a couple dozen rotating proxies and a ship-load of bots flooding the database with junk and overwriting 20 articles a minute. A panic button to lock-down the site would then be nice (Sorry, I can't protect pages fast enough). Then that would give a sysop the time needed to block all the IPs of the vandal. But again, I don't think we are at that point yet.
I actually do already have a "lock the database" button available to developers; maybe I should make that available to sysops as well (as long as "unlock" is as well, of course)?
I also need to start thinking about some back-end stuff like the cron job for making more frequent backups.