my idea is a new feature that make random bushfire and even constructional fires appear.
This would be a great new feature regarding that a community of villagers has to volunteer and fight the bushfires to prevent the fire from spreading and to keep the air pollution low.
But you could start fires on your own to clear large forests. Of course this will have a massive air pollution.
You could start with a small wooden cart with a human powered pump to pump water from a small creek or river through a hose and extinguish the fire. Later, when technology is gained you could replace that cart with a small fire truck with its own tank and a gas powered pump.
I hope someone is excited by my idea and can post it in the dev forum because i have no acces there.