How about a timer for when you have to ban someone. Perhaps it could have settings for hours/days/weeks to fill in for how long the ban lasts before it is automatically removed. Not sure how to make it check without a cron job running. Perhaps have it check each time a banned user logs on?

Yes, that could be nice. I think many of us ban some IPīs thinking of doing it only for some time... that would automate it.<br />I would be more inclined for the checking on IP login than the cron option.

Would be good - could then give a 7 day ban etc.