I think adding more things to dig for other than treasure maps could be a fun and neat way to uncover the lore of the game. I don't know the exact lore off the top of my head but they basically said there were magical cities/islands floating in the sky.
What if when the islands got destructed and fell to the sea, some artifacts came along with them.
We could dig up artifacts to unlock neat rewards while also learning lore.
Certain artifacts could be used to unlock powerful items such as special feats, skills, powers, magic, scrolls to buff weapons, etc etc.
They could do a lot with artifacts. Could also sell some to NPC merchats for high gold prices or sell to other players for even more.
Just a suggestion I think would be another fun addition to the MMO side of the game.
