I know this isn't vital for the server to run, like death/quest/encounter/treasure etc systems, and that the scripters may be full of stuff to handle already, but this should be fairly simple to script. (if I wasn't at work, I'd do it myself)
It would be interesting to have a looting system, similar to what Vulcano developed. Send a message to all players nearby if a player acquires an item (from looting pcs/npcs/placeables, etc). A palming mode would be desireable, but not as vital, I suppose.
This would prevent a lot of headache from dishonest players that loot and lies about what they picked up (ie. *loots a potion* when in fact he picked up a full plate +5 that would be obvious for everyone in the party)