Suggestion about mystic artifacts

Hello pirates!
Well, in my opinion, the game need something more mystic, and i think that i am not the only one with this idea. So, why not give more "functions" to the skulls? They are mystic items that have secrets, but we can only sell them to get more rank and catch more and more to sell again. Since the game have some mystic background, like mythical creatures, ghost ships, cursed cannon balls and shining siren statues, why not have some stones that shoots fireballs, or some special effects for skulls with secrets more than selling them to buy a new hat?
Adding this mechanic will bring more elements to the PvP and PvE. The focus is not make this some magic game, but make the mystic world full of legends stronger, and even more dangerous. The feeling of find an incredible rare stone that can freeze something, or burn it, can add some really good moments!!