Description of feature:
On account deletion, keep some record about the former user for some configurable amount of time.
Possible data to keep may include a new JID or other reference to where they can be reached in the future.
Preventing impersonation of newly deleted accounts
Allowing the former users contacts some time to become aware of the account deletion and possible new JID / other contact method (via the `gone` stanza error, with redirect URI)
Work in progress.
Servers should, however, inform other servers with which a certain jid had contact about its "demise".
And these should then, depending on the will of the administrator, either automatically "clean" the bookmarks or request the owners of the bookmarks to do so.
The servers could then adjust rights/privileges themselves