I think is possible and not very difficult make automatic changes in terrain that reflect what the players do. Example: Cut all trees and the terrain become arid, or plant them for make a arid one become forested, you need water for that, plant close to river and go to the arid area.
Or floods, 2 years ago I live in an area that flood a lot and lost many thing in every one (in RL).
How much we whait for fox/bears traps or pits?
Awesome game.