This is an admin thing, but to you developers who feel our pain, thank you for your supportive votes.
Who out there hasn't performed a Delete Person (either intentionally or not) and then needed to go back and restore that person. If you were smart enough to have a database that you put a copy of all documents in before you delete them from the Domino Directory, then at least you can recover the person document easily. And if you have a recent backup of the directory, you can create a view of groups sorted by member and identify all the groups the name must be added back into. If you have the discipline to avoid putting names directly into ACLs, then you don't have to track down that list of databases to re-add the name, though you may have to guess at what access levels they should have. Let's not even talk about reader/author names fields!
As easy as it is to delete a person from the domain, we really need a process to make it less painful to undelete one.
If you choose to demote this (or any ideas posted), be sure to comment on why to foster discussion.