Hi,
Similar to the auto-delete is the ability to unstick posts automatically or to unstick global announcements.
In fact it would be good, when making a sticky or G A to require a time frame say 60 mins, 6 hrs, 1 day, 7 days, 31 days or until manually unstickied - or to select an ending day/time. Both options should ideally be given, but perhaps be required (or an admin option to enable)
