This is a general wishlist of things that server owners need, particularly for successful public servers. Not every server will need all of these, but, these solve real problems for server admins.
- Logging, logging, logging - block logging, logging of anomolous events, filters to make sense of all this
- Ability to log just specific events (break diamond, chest interaction, etc)
- Statistical detection of possible cheats based on behavior
- Anti-XRay based on lying to clients about all the blocks they can't see
- A completely airtight vanish implementation (spectate without showing up on the user list, and without introducing side effects that other clients could detect)
- Rollback tools (partly covered by worldedit, but it would be nice to be able to do a rollback of a particular user's actions)
- See locations and logs of all players