I would like to try the defense of my island, using my pirates. Would be nice to implement it, the system would be like when you attack another user. You attack your island, you see where you need to improve, and you will lose the pirates you've sent like a normal battle.
This would be cool, but would feel unrealistic. Having your own troops that essentially live on your island attack your island, seems kinda weird.
Arcane Battleground Have This Kinda Mechanic But You Don't Lose Your Troops Or Gain Anything Or Don't Lose anything