A bit off topic but it would be nice if area denial damage was introduced to the game by adding a new technology called the “Carcass Shot” which would be available from the [Arsenal] building.
After researching this technology the [Mortar] and Bomb Ketch (Monitor) will gain a special ability where they will shoot a cannonball that will set the area that it strikes on fire.
This fire will spread out to a certain radius and last there for a certain amount of time, which will damage any enemy unit that is inside of it. There could also be a second but smaller damaging radius outside the fire that will poison enemy units, but the poison won’t harm buildings and ships.
I created a post last year where I suggested that the Carcass Shot could be added to the game.