I would love to see treasure maps for all the wilderness zones. A couple ways i thought of how this could be done.
1) Getting the map and/or pieces
1a. A NPC who gives you a quest to collect fragments from monsters or chests in the zone, then upon handing in the fragments the NPC gives you a map with a X on it where the treasure is.
1b. A map has a chance to spawn in any chest in that zone.
1c. No quest necessary but map pieces can be collected from in rubbage piles or chests or something then combined by the player or combined by a NPC.
1d. Treasure hunter rare spawns that already have a completed map.
2) Getting the treasure
2a. A persistent chest that can only be opened if you have a completed map.
2b. The map has a random location on it and if the map is "used" or activated near that spot then the chest of loot spawns.
2c. If the map is used in the right spot then it turns into a box of goodies in the player's inventory.
I know DDO is limited by the engine and smaller dev team so maybe some of this isn't doable.
3+) Some things I'd love to see.
3a. An interactive map that can be viewed from your inventory in a new window (because we need more windows
3b. Or a temporary X placed on your minimap when you get the treasure map to show you where the treasure is
4a. The loot being randomly generated somewhere in the zone and not 1 fixed spot (i think it'd be hilarious to have it spawn right behind the quest giver 1 out of every 1,000 times)
4b. A couple fixed locations where it could spawn would also be alright.
5. A pile of dirt instead of a chest