I personally really like the idea of how a player would be able to see how their action can impact the environment, but I do think that at this stage of climate change, a lot of people actually do know and recognize the harm in their actions, they just do not know how/why they should change their behaviors, maybe it could be good to look into how to implement that a little more?
One line from your ideation document: "Educational dialogues on fossil fuel usage with critters".
This is something my team also considered but we recognized that players probably do not want to be reading a long block of texts throughout the game so I would suggest to be mindful of that!
Overall I am excited to see how this game turns out!