I would like to see something like this put into place (yes I know tons of other things that need to be fixed, but I wanted to toss out this idea).
How I would like to see it worked is something like this.
Ways to get a treasure map.
2) Rewards from events.
3) Rare loot off monsters (easy and hard ones). Like Zombies.
Things you can get from a treasure map.
1) Rare items.
2) Spawned events.
3) Lots of normal loot (like 500 nails).
4) High QL items or tools.
How to use a treasure map.
1) Maybe something like the map making idea. Would be required to read it.
2) It would give real clues in game to where it is, along with more details as you get closer.
3) Only the person with the Treasure map can access the treasure.
I sorta like how UO did this, and this is what I was thinking of basing it off of.