While looking at an eraser, I have figured out what Forest World's exclusive resource should be: Rubber!
Rubber has tons of factory uses, comes from Rubber Trees, and is just great all around!
Some ideas for buildings:
Rubber Tree Grove
Rubber Tree Farm
Rubber Processing Plant
An idea for a unit:
Rubberbot!
Models coming soon!
The Spice must flow.
I like this idea, you could also have an even more powerful synthetic rubber plant, that still uses rubber as a precursor but requires forest world soil or magnetosphere or whatever to keep it exclusive to forest world.
you could also have an ether rubber tree farm allowing for an interesting combination of exclusive world resources
Face the fear, build the future.
This sounds good, I like it!
Best of regards, Wastelander (formerly Architecture), Overlord and Designated Leader of the Earth States.