I love the cursed chests. They add a whole new mechanics to transporting a chest. And I suggest adding some more. Here are some of my suggestions.
Reapers Chest:
Once placed on a ship, you will be marked on the map with the reapers mark. You can't take away this mark unless you drop of the chest. Even a rowboat will be marked. Also works on skelleton ships, marking them as if they are reaper mark player ships.
Chest of Burning Gold:
You will get damaged as long as you hold the chest. Transporting by hand means you will get a lot of damage and need to keep eating to refill your health. 5% damage per second. More common in the devils roar.
Skelleton curse chest:
As long as you hold this chest all players look like skelletons and you will look like a gunpowderskelleton to them. Nametags become invisible. Team damage will be turned on as long as you hold it. Without communication your teammates will likely shoot you in confusion.
Chest of the damned:
Every 30 seconds something on the ship will break. It can be holes, mast damage, steeringwheel or capstan. Can be used against skeleton ships, but as skeletons use planks it is way less effective then the chest of sorrows)
Northstar chest:
All compasses nearby will point towards the chest instead of north. Making it impossible to navigate by compass, but the northstar will shine more brightly then normal and becomes visible in day even when cloudy. All other ships and players who sail near your ship will be affected as well. You need to find new treasure using the stars and navigate your ship using the map and communication.
