We have in game enough plants and things for a tropical biome. It would be one or two big broad leaf trees that are already in the forest. The palm tree. The lemon tree. The under story would be short grass, ferns, small bushes. The crops would be corn, chilli, hemp. The fauna could be chickens, Boar, goats, cows, Jaguar. No new plants needed.
When we get though the upgrade it could be included.
We could also add an arctic coast biome. Snow, logs on the shore line, no other trees or grass. Boulders. Only crop strawberries (representing tundra berry's). Fauna rabbits, sheep, deer, polar bear. Technically the arctic musk ox is actually a very big mean sheep!
Penguins and polar bears don't mix and are literally not found at the same ends of the planet but penguin are cute.
Survival requires mining early, warming up at a furnace or torch and fishing a lot. Its meant to be a hard start.
