So as our very last purpose, goal, something like that... is to make the colony self-suitainable forever (or at least for a very long time). I think some of these things was suggested but i have something new too :"p And that is why we got this post.
So just like Mark I and II, we just need to rework on some critter, add some more critter's variants and improve ranch system, here something i suggest to make:
*Rework critter (variant): - None (for now)
*Add critter (and variant): - we