SKINs that can be ‘stolen’ from players, by killing them. There would only be a handful of these skins in circulation, and the only way to get them would be to kill the player who already has it.
1- The skin starts with a minimal value. Seeded in some random way by an event or exploration drop or whatever.
2- To ‘steal’ the SKIN, you need to destroy the SKIN owner’s ship that has MORE value than the SKIN.
3- The skin’s value takes on the value of the destroyed ship.
So each time, you would need to kill a ship of greater and greater value. There could be a ‘decay’ in the value of the skin, maybe 5mil per day. Once it hits 0 value, the SKIN is destroyed forever.