Parcel and Estate bans should track how long it was since they were added, and display this info on the ban lists.
This would enable us to tell the difference between old bans and new bans.
We should then be able to set options to automatically delete bans which have grown beyond a certain age.
No point keeping bans for years if our ban list only goes up to 300.
There should also be an option to auto-hide bans on accounts which are temporarily suspended by Linden Lab, and delete bans set on accounts which have been permanently banned by Linden Lab.
After griefer attacks, ban lists can quickly fill up with endless day-old alts. Going through them all is tedious. Bans tend to stick around because they are a pain to manage. Having some sort of default (but changable) expiry on parcel bans, as well as default auto-hiding of bans on suspended/banned accounts, would make life easier.