Your idea is really cool and ties well into real world climate phenomena. Along with showing how different plants and increasing diversity improve the climate and restore the natural landscape, a unique feature is your inclusion of a "soil web," so the player can see and learn about how the synergies between different plants affect one another. I'm glad that you have a plan B in your production plan to prevent scope creep. I think art and visual cues and feedback for the player will be really important here for the player to feel fulfilled as they restore the landscape and see the changes from a barren wasteland to a thriving land full of flora.